fix: Fix timezone issue

To get the correct timezone from Hugo build we need:

* Layout string in theme date format must have "MST".
* Date front matter must have desired timezone as UTC offset.

  Example: For "Asia/Kolkata" timezone to get timezone abbrevation IST
  (Indian Standard Time) in Hugo build provide UTC offset "+0530" in
  date front matter.

  If this is not set then it shows as UTC time.

* Set TZ environment variable to match desired timezone in Hugo build.

  ```bash
  TZ=Asia/Kolkata hugo
  ```

  If this does not match the UTC offset timezone provided in date front
  matter then it just shows the UTC offset instead of timezone
  abbrevation.

Author: manid2

exampleSite/content/posts/markdown-syntax.md

@@ -3,7 +3,7 @@ title = "Markdown Syntax Guide"
 description = """Sample article showcasing basic Markdown syntax and \
   formatting for HTML elements."""
 draft = false
-date = "2023-07-28"
+date = "2024-05-06T01:22:51+0530"
 author = "Hugo Authors"
 tags = ["markdown", "xterm", "css", "html"]
 categories = ["themes", "syntax"]

layouts/_default/single.html

@@ -8,9 +8,9 @@ <h1 class="post-title"><a href="{{ .Permalink }}">{{ .Title | markdownify }}</a>
       {{- if or (.Params.Date) (.Params.Author) }}
         <div class="post-meta">
           {{- with .Params.Date }}
-            <time pubdate datetime="{{ .Format "2006-01-02 15:04:05 IST" }}">
+            <time pubdate datetime="{{ .Format "2006-01-02 15:04:05 MST" }}">
               Published on
-              {{ .Format "2006-01-02 15:04:05 IST" }}
+              {{ .Format "2006-01-02 15:04:05 MST" }}
             </time>
           {{- end }}
 
@@ -19,7 +19,7 @@ <h1 class="post-title"><a href="{{ .Permalink }}">{{ .Title | markdownify }}</a>
           {{- end }}
 
           {{- with .Params.LastMod }}
-            <time pubdate datetime="{{ .Format "2006-01-02 15:04:05 IST" }}"> last modified {{ .Format "2006-01-02 15:04:05 IST" }}. </time>
+            <time pubdate datetime="{{ .Format "2006-01-02 15:04:05 MST" }}"> last modified {{ .Format "2006-01-02 15:04:05 MST" }}. </time>
           {{- end }}
         </div>
       {{- end }}

layouts/partials/footer.html

@@ -1,7 +1,7 @@
 {{- /* site build info */}}
 <p class="buildinfo">
   {{- /* site build timestamp */}}
-  <time datetime="{{ now.Format "2006-01-02 15:04:05 IST" }}">Site built on: {{ now.Format "2006-01-02 15:04:05 IST" }}</time>
+  <time datetime="{{ now.Format "2006-01-02 15:04:05 MST" }}">Site built on: {{ now.Format "2006-01-02 15:04:05 MST" }}</time>
 
   {{- with site.Params.git.last_commit -}}
     {{- $commitUrl := "" -}}

layouts/partials/head/base.html

@@ -52,7 +52,7 @@
     <meta property="article:published_time" content="{{ time .Date }}" />
   {{- end }}
   {{- with .Params.LastMod }}
-    <meta property="article:modified_time" content="{{ .Format "2006-01-02 15:04:05 IST" }}" />
+    <meta property="article:modified_time" content="{{ .Format "2006-01-02 15:04:05 MST" }}" />
   {{- end }}
   <meta property="article:author" content="{{ .Params.Author | default site.Title }}" />
   {{- if .Params.cover -}}

layouts/slides/single.html

@@ -19,9 +19,9 @@ <h1 class="post-title"><a href="{{ .Permalink }}">{{ .Title | markdownify }}</a>
     {{- if or (.Params.Date) (.Params.Author) }}
       <div class="post-meta">
         {{- with .Params.Date }}
-          <time pubdate datetime="{{ .Format "2006-01-02 15:04:05 IST" }}">
+          <time pubdate datetime="{{ .Format "2006-01-02 15:04:05 MST" }}">
             Published on
-            {{ .Format "2006-01-02 15:04:05 IST" }}
+            {{ .Format "2006-01-02 15:04:05 MST" }}
           </time>
         {{- end }}
 
@@ -30,7 +30,7 @@ <h1 class="post-title"><a href="{{ .Permalink }}">{{ .Title | markdownify }}</a>
         {{- end }}
 
         {{- with .Params.LastMod }}
-          <time pubdate datetime="{{ .Format "2006-01-02 15:04:05 IST" }}"> last modified {{ .Format "2006-01-02 15:04:05 IST" }}. </time>
+          <time pubdate datetime="{{ .Format "2006-01-02 15:04:05 MST" }}"> last modified {{ .Format "2006-01-02 15:04:05 MST" }}. </time>
         {{- end }}
       </div>
     {{- end }}