Allow using localized absolute date times within phrases with place holders and localize issue due date events (#24275)

This refactors the `shared/datetime/short|long|full` templates into a
template helper function, which allows us to render absolute date times
within translatable phrases.

- Follows #23988
- The first attempt was in #24055
- This should help #22664 

Changes:
1. Added the `DateTime` template helper that replaces the
`shared/datetime/short|long|full` templates
2. Used find-and-replace with varying regexes to replace the templates
from step 1 (for example, `\{\{template "shared/datetime/(\S+) \(dict
"Datetime" ([^"]+) "Fallback" ([^\)]+\)?) ?\)?\}\}` -> `{{DateTime "$1
$2 $3}}`)
3. Used the new `DateTime` helper in the issue due date timestamp
rendering

# Before

![image](https://user-images.githubusercontent.com/20454870/233791256-b454c455-aca0-4b76-b300-7866c7bd529e.png)

# After

![image](https://user-images.githubusercontent.com/20454870/233790809-c4913355-2822-4657-bb29-2298deb6d4b3.png)

---------

Signed-off-by: Yarden Shoham <git@yardenshoham.com>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>

33 files changed, 64 insertions, 39 deletions

diff --git a/modules/templates/helper.go b/modules/templates/helper.go
index c82f88a42f..b7bef20560 100644
--- a/modules/templates/helper.go
+++ b/modules/templates/helper.go
@@ -139,6 +139,7 @@ func NewFuncMap() []template.FuncMap {
 		"CountFmt":      base.FormatNumberSI,
 		"TimeSince":     timeutil.TimeSince,
 		"TimeSinceUnix": timeutil.TimeSinceUnix,
+		"DateTime":      timeutil.DateTime,
 		"Sec2Time":      util.SecToTime,
 		"DateFmtLong": func(t time.Time) string {
 			return t.Format(time.RFC3339)
diff --git a/modules/timeutil/datetime.go b/modules/timeutil/datetime.go
new file mode 100644
index 0000000000..02275bca0c
--- /dev/null
+++ b/modules/timeutil/datetime.go
@@ -0,0 +1,25 @@
+// Copyright 2023 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package timeutil
+
+import (
+	"fmt"
+	"html"
+	"html/template"
+)
+
+// DateTime renders an absolute time HTML given a time as a string
+func DateTime(format, datetime, fallback string) template.HTML {
+	datetimeEscaped := html.EscapeString(datetime)
+	fallbackEscaped := html.EscapeString(fallback)
+	switch format {
+	case "short":
+		return template.HTML(fmt.Sprintf(`<relative-time format="datetime" year="numeric" month="short" day="numeric" weekday="" datetime="%s">%s</relative-time>`, datetimeEscaped, fallbackEscaped))
+	case "long":
+		return template.HTML(fmt.Sprintf(`<relative-time format="datetime" year="numeric" month="long" day="numeric" weekday="" datetime="%s">%s</relative-time>`, datetimeEscaped, fallbackEscaped))
+	case "full":
+		return template.HTML(fmt.Sprintf(`<relative-time format="datetime" weekday="" year="numeric" month="short" day="numeric" hour="numeric" minute="numeric" second="numeric" datetime="%s">%s</relative-time>`, datetimeEscaped, fallbackEscaped))
+	}
+	return template.HTML("error in DateTime")
+}
diff --git a/templates/admin/auth/list.tmpl b/templates/admin/auth/list.tmpl
index 5350672026..f8e15eddef 100644
--- a/templates/admin/auth/list.tmpl
+++ b/templates/admin/auth/list.tmpl
@@ -26,8 +26,8 @@
 							<td><a href="{{AppSubUrl}}/admin/auths/{{.ID}}">{{.Name}}</a></td>
 							<td>{{.TypeName}}</td>
 							<td>{{if .IsActive}}{{svg "octicon-check"}}{{else}}{{svg "octicon-x"}}{{end}}</td>
-							<td>{{template "shared/datetime/short" (dict "Datetime" .UpdatedUnix.FormatLong "Fallback" .UpdatedUnix.FormatShort)}}</td>
-							<td>{{template "shared/datetime/short" (dict "Datetime" .CreatedUnix.FormatLong "Fallback" .CreatedUnix.FormatShort)}}</td>
+							<td>{{DateTime "short" .UpdatedUnix.FormatLong .UpdatedUnix.FormatShort}}</td>
+							<td>{{DateTime "short" .CreatedUnix.FormatLong .CreatedUnix.FormatShort}}</td>
 							<td><a href="{{AppSubUrl}}/admin/auths/{{.ID}}">{{svg "octicon-pencil"}}</a></td>
 						</tr>
 					{{end}}
diff --git a/templates/admin/cron.tmpl b/templates/admin/cron.tmpl
index 51685112ba..5dd6314944 100644
--- a/templates/admin/cron.tmpl
+++ b/templates/admin/cron.tmpl
@@ -21,8 +21,8 @@
 						<td><button type="submit" class="ui green button" name="op" value="{{.Name}}" title="{{$.locale.Tr "admin.dashboard.operation_run"}}">{{svg "octicon-triangle-right"}}</button></td>
 						<td>{{$.locale.Tr (printf "admin.dashboard.%s" .Name)}}</td>
 						<td>{{.Spec}}</td>
-						<td>{{template "shared/datetime/full" (dict "Datetime" (DateFmtLong .Next) "Fallback" (DateFmtLong .Next) )}}</td>
-						<td>{{if gt .Prev.Year 1}}{{template "shared/datetime/full" (dict "Datetime" (DateFmtLong .Prev) "Fallback" (DateFmtLong .Prev) )}}{{else}}N/A{{end}}</td>
+						<td>{{DateTime "full" (DateFmtLong .Next) (DateFmtLong .Next)}}</td>
+						<td>{{if gt .Prev.Year 1}}{{DateTime "full" (DateFmtLong .Prev) (DateFmtLong .Prev)}}{{else}}N/A{{end}}</td>
 						<td>{{.ExecTimes}}</td>
 						<td {{if ne .Status ""}}data-tooltip-content="{{.FormatLastMessage $.locale}}"{{end}} >{{if eq .Status ""}}—{{else if eq .Status "finished"}}{{svg "octicon-check" 16}}{{else}}{{svg "octicon-x" 16}}{{end}}</td>
 					</tr>
diff --git a/templates/admin/notice.tmpl b/templates/admin/notice.tmpl
index 82acb14247..51b0c6850a 100644
--- a/templates/admin/notice.tmpl
+++ b/templates/admin/notice.tmpl
@@ -26,7 +26,7 @@
 							<td>{{.ID}}</td>
 							<td>{{$.locale.Tr .TrStr}}</td>
 							<td class="view-detail"><span class="notice-description text truncate">{{.Description}}</span></td>
-							<td>{{template "shared/datetime/short" (dict "Datetime" .CreatedUnix.FormatLong "Fallback" .CreatedUnix.FormatShort)}}</td>
+							<td>{{DateTime "short" .CreatedUnix.FormatLong .CreatedUnix.FormatShort}}</td>
 							<td><a href="#">{{svg "octicon-note" 16 "view-detail"}}</a></td>
 						</tr>
 					{{end}}
diff --git a/templates/admin/org/list.tmpl b/templates/admin/org/list.tmpl
index 2e8a635985..73435fdd37 100644
--- a/templates/admin/org/list.tmpl
+++ b/templates/admin/org/list.tmpl
@@ -41,7 +41,7 @@
 							<td>{{.NumTeams}}</td>
 							<td>{{.NumMembers}}</td>
 							<td>{{.NumRepos}}</td>
-							<td>{{template "shared/datetime/short" (dict "Datetime" .CreatedUnix.FormatLong "Fallback" .CreatedUnix.FormatShort)}}</td>
+							<td>{{DateTime "short" .CreatedUnix.FormatLong .CreatedUnix.FormatShort}}</td>
 							<td><a href="{{.OrganisationLink}}/settings">{{svg "octicon-pencil"}}</a></td>
 						</tr>
 					{{end}}
diff --git a/templates/admin/packages/list.tmpl b/templates/admin/packages/list.tmpl
index af98e76175..48046f4296 100644
--- a/templates/admin/packages/list.tmpl
+++ b/templates/admin/packages/list.tmpl
@@ -65,7 +65,7 @@
 							{{end}}
 							</td>
 							<td>{{FileSize .CalculateBlobSize}}</td>
-							<td>{{template "shared/datetime/short" (dict "Datetime" .Version.CreatedUnix.FormatLong "Fallback" .Version.CreatedUnix.FormatShort)}}</td>
+							<td>{{DateTime "short" .Version.CreatedUnix.FormatLong .Version.CreatedUnix.FormatShort}}</td>
 							<td><a class="delete-button" href="" data-url="{{$.Link}}/delete?page={{$.Page.Paginater.Current}}&sort={{$.SortType}}" data-id="{{.Version.ID}}" data-name="{{.Package.Name}}" data-data-version="{{.Version.Version}}">{{svg "octicon-trash"}}</a></td>
 						</tr>
 					{{end}}
diff --git a/templates/admin/queue.tmpl b/templates/admin/queue.tmpl
index b6ca0de117..79b20dc1a4 100644
--- a/templates/admin/queue.tmpl
+++ b/templates/admin/queue.tmpl
@@ -155,8 +155,8 @@
 					{{range .Queue.Workers}}
 					<tr>
 						<td>{{.Workers}}{{if .IsFlusher}}<span title="{{$.locale.Tr "admin.monitor.queue.flush"}}">{{svg "octicon-sync"}}</span>{{end}}</td>
-						<td>{{template "shared/datetime/full" (dict "Datetime" (DateFmtLong .Start) "Fallback" (DateFmtLong .Start) )}}</td>
-						<td>{{if .HasTimeout}}{{template "shared/datetime/full" (dict "Datetime" (DateFmtLong .Timeout) "Fallback" (DateFmtLong .Timeout) )}}{{else}}-{{end}}</td>
+						<td>{{DateTime "full" (DateFmtLong .Start) (DateFmtLong .Start)}}</td>
+						<td>{{if .HasTimeout}}{{DateTime "full" (DateFmtLong .Timeout) (DateFmtLong .Timeout)}}{{else}}-{{end}}</td>
 						<td>
 							<a class="delete-button" href="" data-url="{{$.Link}}/cancel/{{.PID}}" data-id="{{.PID}}" data-name="{{.Workers}}" title="{{$.locale.Tr "remove"}}">{{svg "octicon-trash"}}</a>
 						</td>
diff --git a/templates/admin/repo/list.tmpl b/templates/admin/repo/list.tmpl
index 59aa36d19d..06c801774f 100644
--- a/templates/admin/repo/list.tmpl
+++ b/templates/admin/repo/list.tmpl
@@ -80,7 +80,7 @@
 							<td>{{.NumForks}}</td>
 							<td>{{.NumIssues}}</td>
 							<td>{{FileSize .Size}}</td>
-							<td>{{template "shared/datetime/short" (dict "Datetime" .CreatedUnix.FormatLong "Fallback" .CreatedUnix.FormatShort)}}</td>
+							<td>{{DateTime "short" .CreatedUnix.FormatLong .CreatedUnix.FormatShort}}</td>
 							<td><a class="delete-button" href="" data-url="{{$.Link}}/delete?page={{$.Page.Paginater.Current}}&sort={{$.SortType}}" data-id="{{.ID}}" data-name="{{.Name}}">{{svg "octicon-trash"}}</a></td>
 						</tr>
 					{{end}}
diff --git a/templates/admin/user/list.tmpl b/templates/admin/user/list.tmpl
index c7644b3b4e..fef7c7b27f 100644
--- a/templates/admin/user/list.tmpl
+++ b/templates/admin/user/list.tmpl
@@ -91,9 +91,9 @@
 							<td>{{if .IsRestricted}}{{svg "octicon-check"}}{{else}}{{svg "octicon-x"}}{{end}}</td>
 							<td>{{if index $.UsersTwoFaStatus .ID}}{{svg "octicon-check"}}{{else}}{{svg "octicon-x"}}{{end}}</td>
 							<td>{{.NumRepos}}</td>
-							<td>{{template "shared/datetime/short" (dict "Datetime" .CreatedUnix.FormatLong "Fallback" .CreatedUnix.FormatShort)}}</td>
+							<td>{{DateTime "short" .CreatedUnix.FormatLong .CreatedUnix.FormatShort}}</td>
 							{{if .LastLoginUnix}}
-								<td>{{template "shared/datetime/short" (dict "Datetime" .LastLoginUnix.FormatLong "Fallback" .LastLoginUnix.FormatShort)}}</td>
+								<td>{{DateTime "short" .LastLoginUnix.FormatLong .LastLoginUnix.FormatShort}}</td>
 							{{else}}
 								<td><span>{{$.locale.Tr "admin.users.never_login"}}</span></td>
 							{{end}}
diff --git a/templates/explore/organizations.tmpl b/templates/explore/organizations.tmpl
index fe9359251b..e61a72b6ed 100644
--- a/templates/explore/organizations.tmpl
+++ b/templates/explore/organizations.tmpl
@@ -23,7 +23,7 @@
 								{{svg "octicon-link"}}
 								<a href="{{.Website}}" rel="nofollow">{{.Website}}</a>
 							{{end}}
-							{{svg "octicon-clock"}} {{$.locale.Tr "user.join_on"}} {{template "shared/datetime/short" (dict "Datetime" .CreatedUnix.FormatLong "Fallback" .CreatedUnix.FormatShort)}}
+							{{svg "octicon-clock"}} {{$.locale.Tr "user.join_on"}} {{DateTime "short" .CreatedUnix.FormatLong .CreatedUnix.FormatShort}}
 						</div>
 					</div>
 				</div>
diff --git a/templates/explore/users.tmpl b/templates/explore/users.tmpl
index 5dbc4ef6e7..4cab94ee86 100644
--- a/templates/explore/users.tmpl
+++ b/templates/explore/users.tmpl
@@ -18,7 +18,7 @@
 								{{svg "octicon-mail"}}
 								<a href="mailto:{{.Email}}" rel="nofollow">{{.Email}}</a>
 							{{end}}
-							{{svg "octicon-clock"}} {{$.locale.Tr "user.join_on"}} {{template "shared/datetime/short" (dict "Datetime" .CreatedUnix.FormatLong "Fallback" .CreatedUnix.FormatShort)}}
+							{{svg "octicon-clock"}} {{$.locale.Tr "user.join_on"}} {{DateTime "short" .CreatedUnix.FormatLong .CreatedUnix.FormatShort}}
 						</div>
 					</div>
 				</div>
diff --git a/templates/package/shared/cleanup_rules/preview.tmpl b/templates/package/shared/cleanup_rules/preview.tmpl
index f9c9bc71f0..ae1ce1b1d5 100644
--- a/templates/package/shared/cleanup_rules/preview.tmpl
+++ b/templates/package/shared/cleanup_rules/preview.tmpl
@@ -22,7 +22,7 @@
 					<td><a href="{{.FullWebLink}}">{{.Version.Version}}</a></td>
 					<td><a href="{{.Creator.HomeLink}}">{{.Creator.Name}}</a></td>
 					<td>{{FileSize .CalculateBlobSize}}</td>
-					<td>{{template "shared/datetime/short" (dict "Datetime" .Version.CreatedUnix.FormatLong "Fallback" .Version.CreatedUnix.FormatShort)}}</td>
+					<td>{{DateTime "short" .Version.CreatedUnix.FormatLong .Version.CreatedUnix.FormatShort}}</td>
 				</tr>
 			{{else}}
 				<tr>
diff --git a/templates/package/view.tmpl b/templates/package/view.tmpl
index 7c622a91b3..36b0e8a8b3 100644
--- a/templates/package/view.tmpl
+++ b/templates/package/view.tmpl
@@ -86,7 +86,7 @@
 							{{range .LatestVersions}}
 								<div class="item gt-df">
 									<a class="gt-f1" href="{{$.PackageDescriptor.PackageWebLink}}/{{PathEscape .LowerVersion}}">{{.Version}}</a>
-									<span class="text small">{{template "shared/datetime/short" (dict "Datetime" (.CreatedUnix.FormatDate) "Fallback" (.CreatedUnix.FormatDate))}}</span>
+									<span class="text small">{{DateTime "short" (.CreatedUnix.FormatDate) (.CreatedUnix.FormatDate)}}</span>
 								</div>
 							{{end}}
 							</div>
diff --git a/templates/repo/activity.tmpl b/templates/repo/activity.tmpl
index aa71fe838b..26734e304a 100644
--- a/templates/repo/activity.tmpl
+++ b/templates/repo/activity.tmpl
@@ -2,7 +2,7 @@
 <div role="main" aria-label="{{.Title}}" class="page-content repository commits">
 	{{template "repo/header" .}}
 	<div class="ui container">
-		<h2 class="ui header">{{template "shared/datetime/long" (dict "Datetime" .DateFrom "Fallback" .DateFrom)}} - {{template "shared/datetime/long" (dict "Datetime" .DateUntil "Fallback" .DateUntil)}}
+		<h2 class="ui header">{{DateTime "long" .DateFrom .DateFrom}} - {{DateTime "long" .DateUntil .DateUntil}}
 			<div class="ui right">
 				<!-- Period -->
 				<div class="ui floating dropdown jump filter">
diff --git a/templates/repo/issue/milestone_issues.tmpl b/templates/repo/issue/milestone_issues.tmpl
index 137f2c2d9d..ccbc40586a 100644
--- a/templates/repo/issue/milestone_issues.tmpl
+++ b/templates/repo/issue/milestone_issues.tmpl
@@ -35,7 +35,7 @@
 				{{else}}
 					{{svg "octicon-calendar"}}
 					{{if .Milestone.DeadlineString}}
-						<span {{if .IsOverdue}}class="overdue"{{end}}>{{template "shared/datetime/short" (dict "Datetime" .Milestone.DeadlineString "Fallback" .Milestone.DeadlineString)}}</span>
+						<span {{if .IsOverdue}}class="overdue"{{end}}>{{DateTime "short" .Milestone.DeadlineString .Milestone.DeadlineString}}</span>
 					{{else}}
 						{{$.locale.Tr "repo.milestones.no_due_date"}}
 					{{end}}
diff --git a/templates/repo/issue/milestones.tmpl b/templates/repo/issue/milestones.tmpl
index c07232c759..7abb1a6606 100644
--- a/templates/repo/issue/milestones.tmpl
+++ b/templates/repo/issue/milestones.tmpl
@@ -77,7 +77,7 @@
 						{{else}}
 							{{svg "octicon-calendar"}}
 							{{if .DeadlineString}}
-								<span {{if .IsOverdue}}class="overdue"{{end}}>{{template "shared/datetime/short" (dict "Datetime" .DeadlineString "Fallback" .DeadlineString)}}</span>
+								<span {{if .IsOverdue}}class="overdue"{{end}}>{{DateTime "short" .DeadlineString .DeadlineString}}</span>
 							{{else}}
 								{{$.locale.Tr "repo.milestones.no_due_date"}}
 							{{end}}
diff --git a/templates/repo/issue/view_content/comments.tmpl b/templates/repo/issue/view_content/comments.tmpl
index 45077e91ba..142c8153f0 100644
--- a/templates/repo/issue/view_content/comments.tmpl
+++ b/templates/repo/issue/view_content/comments.tmpl
@@ -295,7 +295,7 @@
 				{{template "shared/user/avatarlink" dict "Context" $.Context "user" .Poster}}
 				<span class="text grey muted-links">
 					{{template "shared/user/authorlink" .Poster}}
-					{{$.locale.Tr "repo.issues.due_date_added" .Content $createdStr | Safe}}
+					{{$.locale.Tr "repo.issues.due_date_added" (DateTime "long" .Content .Content) $createdStr | Safe}}
 				</span>
 			</div>
 		{{else if eq .Type 17}}
@@ -305,7 +305,9 @@
 				<span class="text grey muted-links">
 					{{template "shared/user/authorlink" .Poster}}
 					{{$parsedDeadline := .Content | ParseDeadline}}
-					{{$.locale.Tr "repo.issues.due_date_modified" (index $parsedDeadline 0) (index $parsedDeadline 1) $createdStr | Safe}}
+					{{$from := DateTime "long" (index $parsedDeadline 1) (index $parsedDeadline 1)}}
+					{{$to := DateTime "long" (index $parsedDeadline 0) (index $parsedDeadline 0)}}
+					{{$.locale.Tr "repo.issues.due_date_modified" $to $from $createdStr | Safe}}
 				</span>
 			</div>
 		{{else if eq .Type 18}}
@@ -314,7 +316,7 @@
 				{{template "shared/user/avatarlink" dict "Context" $.Context "user" .Poster}}
 				<span class="text grey muted-links">
 					{{template "shared/user/authorlink" .Poster}}
-					{{$.locale.Tr "repo.issues.due_date_remove" .Content $createdStr | Safe}}
+					{{$.locale.Tr "repo.issues.due_date_remove" (DateTime "long" .Content .Content) $createdStr | Safe}}
 				</span>
 			</div>
 		{{else if eq .Type 19}}
diff --git a/templates/repo/issue/view_content/sidebar.tmpl b/templates/repo/issue/view_content/sidebar.tmpl
index bab9ff1936..a8ca0331c7 100644
--- a/templates/repo/issue/view_content/sidebar.tmpl
+++ b/templates/repo/issue/view_content/sidebar.tmpl
@@ -385,7 +385,7 @@
 					<div class="gt-df gt-sb gt-ac">
 						<div class="due-date {{if .Issue.IsOverdue}}text red{{end}}" {{if .Issue.IsOverdue}}data-tooltip-content="{{.locale.Tr "repo.issues.due_date_overdue"}}"{{end}}>
 							{{svg "octicon-calendar" 16 "gt-mr-3"}}
-							{{template "shared/datetime/long" (dict "Datetime" .Issue.DeadlineUnix.FormatDate "Fallback" .Issue.DeadlineUnix.FormatDate)}}
+							{{DateTime "long" .Issue.DeadlineUnix.FormatDate .Issue.DeadlineUnix.FormatDate}}
 						</div>
 						<div>
 							{{if and .HasIssuesOrPullsWritePermission (not .Repository.IsArchived)}}
diff --git a/templates/repo/settings/deploy_keys.tmpl b/templates/repo/settings/deploy_keys.tmpl
index e577fcc5fa..584a6ee1a6 100644
--- a/templates/repo/settings/deploy_keys.tmpl
+++ b/templates/repo/settings/deploy_keys.tmpl
@@ -60,7 +60,7 @@
 									{{.Fingerprint}}
 								</div>
 								<div class="activity meta">
-									<i>{{$.locale.Tr "settings.add_on"}} <span>{{template "shared/datetime/short" (dict "Datetime" .CreatedUnix.FormatLong "Fallback" .CreatedUnix.FormatShort)}}</span> —  {{svg "octicon-info"}} {{if .HasUsed}}{{$.locale.Tr "settings.last_used"}} <span {{if .HasRecentActivity}}class="green"{{end}}>{{template "shared/datetime/short" (dict "Datetime" .UpdatedUnix.FormatLong "Fallback" .UpdatedUnix.FormatShort)}}</span>{{else}}{{$.locale.Tr "settings.no_activity"}}{{end}} - <span>{{$.locale.Tr "settings.can_read_info"}}{{if not .IsReadOnly}} / {{$.locale.Tr "settings.can_write_info"}} {{end}}</span></i>
+									<i>{{$.locale.Tr "settings.add_on"}} <span>{{DateTime "short" .CreatedUnix.FormatLong .CreatedUnix.FormatShort}}</span> —  {{svg "octicon-info"}} {{if .HasUsed}}{{$.locale.Tr "settings.last_used"}} <span {{if .HasRecentActivity}}class="green"{{end}}>{{DateTime "short" .UpdatedUnix.FormatLong .UpdatedUnix.FormatShort}}</span>{{else}}{{$.locale.Tr "settings.no_activity"}}{{end}} - <span>{{$.locale.Tr "settings.can_read_info"}}{{if not .IsReadOnly}} / {{$.locale.Tr "settings.can_write_info"}} {{end}}</span></i>
 								</div>
 							</div>
 						</div>
diff --git a/templates/repo/settings/options.tmpl b/templates/repo/settings/options.tmpl
index 9440f265fc..0f69dac53c 100644
--- a/templates/repo/settings/options.tmpl
+++ b/templates/repo/settings/options.tmpl
@@ -89,7 +89,7 @@
 						<tr>
 							<td>{{(MirrorRemoteAddress $.Context .Repository .Mirror.GetRemoteName false).Address}}</td>
 							<td>{{$.locale.Tr "repo.settings.mirror_settings.direction.pull"}}</td>
-							<td>{{template "shared/datetime/full" (dict "Datetime" .Mirror.UpdatedUnix.FormatLong "Fallback" .Mirror.UpdatedUnix.AsTime)}}</td>
+							<td>{{DateTime "full" .Mirror.UpdatedUnix.FormatLong .Mirror.UpdatedUnix.AsTime}}</td>
 							<td class="right aligned">
 								<form method="post" style="display: inline-block">
 									{{.CsrfTokenHtml}}
@@ -167,7 +167,7 @@
 							{{$address := MirrorRemoteAddress $.Context $.Repository .GetRemoteName true}}
 							<td>{{$address.Address}}</td>
 							<td>{{$.locale.Tr "repo.settings.mirror_settings.direction.push"}}</td>
-							<td>{{if .LastUpdateUnix}}{{template "shared/datetime/full" (dict "Datetime" .LastUpdateUnix.FormatLong "Fallback" .LastUpdateUnix.AsTime)}}{{else}}{{$.locale.Tr "never"}}{{end}} {{if .LastError}}<div class="ui red label" data-tooltip-content="{{.LastError}}">{{$.locale.Tr "error"}}</div>{{end}}</td>
+							<td>{{if .LastUpdateUnix}}{{DateTime "full" .LastUpdateUnix.FormatLong .LastUpdateUnix.AsTime}}{{else}}{{$.locale.Tr "never"}}{{end}} {{if .LastError}}<div class="ui red label" data-tooltip-content="{{.LastError}}">{{$.locale.Tr "error"}}</div>{{end}}</td>
 							<td class="right aligned">
 								<form method="post" style="display: inline-block">
 									{{$.CsrfTokenHtml}}
diff --git a/templates/repo/user_cards.tmpl b/templates/repo/user_cards.tmpl
index a48fd41744..5acea0b4d9 100644
--- a/templates/repo/user_cards.tmpl
+++ b/templates/repo/user_cards.tmpl
@@ -18,7 +18,7 @@
 					{{else if .Location}}
 						{{svg "octicon-location"}} {{.Location}}
 					{{else}}
-						{{svg "octicon-clock"}} {{$.locale.Tr "user.join_on"}} {{template "shared/datetime/short" (dict "Datetime" .CreatedUnix.FormatLong "Fallback" .CreatedUnix.FormatShort)}}
+						{{svg "octicon-clock"}} {{$.locale.Tr "user.join_on"}} {{DateTime "short" .CreatedUnix.FormatLong .CreatedUnix.FormatShort}}
 					{{end}}
 				</div>
 			</li>
diff --git a/templates/shared/datetime/full.tmpl b/templates/shared/datetime/full.tmpl
deleted file mode 100644
index 1c55a4b53e..0000000000
--- a/templates/shared/datetime/full.tmpl
+++ /dev/null
@@ -1 +0,0 @@
-<relative-time format="datetime" weekday="" year="numeric" month="short" day="numeric" hour="numeric" minute="numeric" second="numeric" datetime="{{.Datetime}}">{{.Fallback}}</relative-time>
diff --git a/templates/shared/datetime/long.tmpl b/templates/shared/datetime/long.tmpl
deleted file mode 100644
index 4880cf3f91..0000000000
--- a/templates/shared/datetime/long.tmpl
+++ /dev/null
@@ -1 +0,0 @@
-<relative-time format="datetime" year="numeric" month="long" day="numeric" weekday="" datetime="{{.Datetime}}">{{.Fallback}}</relative-time>
diff --git a/templates/shared/datetime/short.tmpl b/templates/shared/datetime/short.tmpl
deleted file mode 100644
index e5bcef6459..0000000000
--- a/templates/shared/datetime/short.tmpl
+++ /dev/null
@@ -1 +0,0 @@
-<relative-time format="datetime" year="numeric" month="short" day="numeric" weekday="" datetime="{{.Datetime}}">{{.Fallback}}</relative-time>
diff --git a/templates/shared/issuelist.tmpl b/templates/shared/issuelist.tmpl
index 198e76f37c..d3d9729fe4 100644
--- a/templates/shared/issuelist.tmpl
+++ b/templates/shared/issuelist.tmpl
@@ -106,7 +106,7 @@
 						<span class="due-date" data-tooltip-content="{{$.locale.Tr "repo.issues.due_date"}}">
 							<span{{if .IsOverdue}} class="overdue"{{end}}>
 								{{svg "octicon-calendar" 14 "gt-mr-2"}}
-								{{template "shared/datetime/short" (dict "Datetime" .DeadlineUnix.FormatDate "Fallback" .DeadlineUnix.FormatShort)}}
+								{{DateTime "short" .DeadlineUnix.FormatDate .DeadlineUnix.FormatShort}}
 							</span>
 						</span>
 					{{end}}
diff --git a/templates/user/dashboard/milestones.tmpl b/templates/user/dashboard/milestones.tmpl
index 09519ce005..468bde0b78 100644
--- a/templates/user/dashboard/milestones.tmpl
+++ b/templates/user/dashboard/milestones.tmpl
@@ -97,7 +97,7 @@
 								{{else}}
 									{{svg "octicon-calendar"}}
 									{{if .DeadlineString}}
-										<span {{if .IsOverdue}}class="overdue"{{end}}>{{template "shared/datetime/short" (dict "Datetime" .DeadlineString "Fallback" .DeadlineString)}}</span>
+										<span {{if .IsOverdue}}class="overdue"{{end}}>{{DateTime "short" .DeadlineString .DeadlineString}}</span>
 									{{else}}
 										{{$.locale.Tr "repo.milestones.no_due_date"}}
 									{{end}}
diff --git a/templates/user/profile.tmpl b/templates/user/profile.tmpl
index 376dfacacf..2ad92612a2 100644
--- a/templates/user/profile.tmpl
+++ b/templates/user/profile.tmpl
@@ -73,7 +73,7 @@
 									</li>
 								{{end}}
 							{{end}}
-							<li>{{svg "octicon-clock"}} {{.locale.Tr "user.join_on"}} {{template "shared/datetime/short" (dict "Datetime" .ContextUser.CreatedUnix.FormatLong "Fallback" .ContextUser.CreatedUnix.FormatShort)}}</li>
+							<li>{{svg "octicon-clock"}} {{.locale.Tr "user.join_on"}} {{DateTime "short" .ContextUser.CreatedUnix.FormatLong .ContextUser.CreatedUnix.FormatShort}}</li>
 							{{if and .Orgs .HasOrgsVisible}}
 							<li>
 								<ul class="user-orgs">
diff --git a/templates/user/settings/applications.tmpl b/templates/user/settings/applications.tmpl
index c8789bbe82..fb1154d0c8 100644
--- a/templates/user/settings/applications.tmpl
+++ b/templates/user/settings/applications.tmpl
@@ -27,7 +27,7 @@
 								</ul>
 							</details>
 							<div class="activity meta">
-								<i>{{$.locale.Tr "settings.add_on"}} <span>{{template "shared/datetime/short" (dict "Datetime" .CreatedUnix.FormatLong "Fallback" .CreatedUnix.FormatShort)}}</span> — {{svg "octicon-info"}} {{if .HasUsed}}{{$.locale.Tr "settings.last_used"}} <span {{if .HasRecentActivity}}class="green"{{end}}>{{template "shared/datetime/short" (dict "Datetime" .UpdatedUnix.FormatLong "Fallback" .UpdatedUnix.FormatShort)}}</span>{{else}}{{$.locale.Tr "settings.no_activity"}}{{end}}</i>
+								<i>{{$.locale.Tr "settings.add_on"}} <span>{{DateTime "short" .CreatedUnix.FormatLong .CreatedUnix.FormatShort}}</span> — {{svg "octicon-info"}} {{if .HasUsed}}{{$.locale.Tr "settings.last_used"}} <span {{if .HasRecentActivity}}class="green"{{end}}>{{DateTime "short" .UpdatedUnix.FormatLong .UpdatedUnix.FormatShort}}</span>{{else}}{{$.locale.Tr "settings.no_activity"}}{{end}}</i>
 							</div>
 						</div>
 					</div>
diff --git a/templates/user/settings/grants_oauth2.tmpl b/templates/user/settings/grants_oauth2.tmpl
index 205b374176..3fe34a8727 100644
--- a/templates/user/settings/grants_oauth2.tmpl
+++ b/templates/user/settings/grants_oauth2.tmpl
@@ -20,7 +20,7 @@
 				<div class="content">
 					<strong>{{$grant.Application.Name}}</strong>
 					<div class="activity meta">
-						<i>{{$.locale.Tr "settings.add_on"}} <span>{{template "shared/datetime/short" (dict "Datetime" $grant.CreatedUnix.FormatLong "Fallback" $grant.CreatedUnix.FormatShort)}}</span></i>
+						<i>{{$.locale.Tr "settings.add_on"}} <span>{{DateTime "short" $grant.CreatedUnix.FormatLong $grant.CreatedUnix.FormatShort}}</span></i>
 					</div>
 				</div>
 			</div>
diff --git a/templates/user/settings/keys_gpg.tmpl b/templates/user/settings/keys_gpg.tmpl
index 46b60aafd8..a488555404 100644
--- a/templates/user/settings/keys_gpg.tmpl
+++ b/templates/user/settings/keys_gpg.tmpl
@@ -68,9 +68,9 @@
 						<b>{{$.locale.Tr "settings.subkeys"}}:</b> {{range .SubsKey}} {{.PaddedKeyID}} {{end}}
 					</div>
 					<div class="activity meta">
-						<i>{{$.locale.Tr "settings.add_on"}} <span>{{template "shared/datetime/short" (dict "Datetime" .AddedUnix.FormatLong "Fallback" .AddedUnix.FormatShort)}}</span></i>
+						<i>{{$.locale.Tr "settings.add_on"}} <span>{{DateTime "short" .AddedUnix.FormatLong .AddedUnix.FormatShort}}</span></i>
 						-
-						<i>{{if not .ExpiredUnix.IsZero}}{{$.locale.Tr "settings.valid_until"}} <span>{{template "shared/datetime/short" (dict "Datetime" .ExpiredUnix.FormatLong "Fallback" .ExpiredUnix.FormatShort)}}</span>{{else}}{{$.locale.Tr "settings.valid_forever"}}{{end}}</i>
+						<i>{{if not .ExpiredUnix.IsZero}}{{$.locale.Tr "settings.valid_until"}} <span>{{DateTime "short" .ExpiredUnix.FormatLong .ExpiredUnix.FormatShort}}</span>{{else}}{{$.locale.Tr "settings.valid_forever"}}{{end}}</i>
 					</div>
 				</div>
 			</div>
diff --git a/templates/user/settings/keys_principal.tmpl b/templates/user/settings/keys_principal.tmpl
index 5251e465fd..51009fdea1 100644
--- a/templates/user/settings/keys_principal.tmpl
+++ b/templates/user/settings/keys_principal.tmpl
@@ -25,7 +25,7 @@
 					<div class="content">
 						<strong>{{.Name}}</strong>
 						<div class="activity meta">
-							<i>{{$.locale.Tr "settings.add_on"}} <span>{{template "shared/datetime/short" (dict "Datetime" .CreatedUnix.FormatLong "Fallback" .CreatedUnix.FormatShort)}}</span> —  {{svg "octicon-info" 16}} {{if .HasUsed}}{{$.locale.Tr "settings.last_used"}} <span {{if .HasRecentActivity}}class="green"{{end}}>{{template "shared/datetime/short" (dict "Datetime" .UpdatedUnix.FormatLong "Fallback" .UpdatedUnix.FormatShort)}}</span>{{else}}{{$.locale.Tr "settings.no_activity"}}{{end}}</i>
+							<i>{{$.locale.Tr "settings.add_on"}} <span>{{DateTime "short" .CreatedUnix.FormatLong .CreatedUnix.FormatShort}}</span> —  {{svg "octicon-info" 16}} {{if .HasUsed}}{{$.locale.Tr "settings.last_used"}} <span {{if .HasRecentActivity}}class="green"{{end}}>{{DateTime "short" .UpdatedUnix.FormatLong .UpdatedUnix.FormatShort}}</span>{{else}}{{$.locale.Tr "settings.no_activity"}}{{end}}</i>
 						</div>
 					</div>
 				</div>
diff --git a/templates/user/settings/keys_ssh.tmpl b/templates/user/settings/keys_ssh.tmpl
index d66b4ea528..abe0624d96 100644
--- a/templates/user/settings/keys_ssh.tmpl
+++ b/templates/user/settings/keys_ssh.tmpl
@@ -59,7 +59,7 @@
 								{{.Fingerprint}}
 						</div>
 						<div class="activity meta">
-								<i>{{$.locale.Tr "settings.add_on"}} <span>{{template "shared/datetime/short" (dict "Datetime" .CreatedUnix.FormatLong "Fallback" .CreatedUnix.FormatShort)}}</span> —	{{svg "octicon-info"}} {{if .HasUsed}}{{$.locale.Tr "settings.last_used"}} <span {{if .HasRecentActivity}}class="green"{{end}}>{{template "shared/datetime/short" (dict "Datetime" .UpdatedUnix.FormatLong "Fallback" .UpdatedUnix.FormatShort)}}</span>{{else}}{{$.locale.Tr "settings.no_activity"}}{{end}}</i>
+								<i>{{$.locale.Tr "settings.add_on"}} <span>{{DateTime "short" .CreatedUnix.FormatLong .CreatedUnix.FormatShort}}</span> —	{{svg "octicon-info"}} {{if .HasUsed}}{{$.locale.Tr "settings.last_used"}} <span {{if .HasRecentActivity}}class="green"{{end}}>{{DateTime "short" .UpdatedUnix.FormatLong .UpdatedUnix.FormatShort}}</span>{{else}}{{$.locale.Tr "settings.no_activity"}}{{end}}</i>
 						</div>
 				</div>
 			</div>