24h option

src/components/settings_modal/tabs/general_tab.js

@@ -30,6 +30,11 @@ const GeneralTab = {
         value: mode,
         label: this.$t(`settings.conversation_display_${mode}`)
       })),
+      absoluteTime12hOptions: ['24h', '12h'].map(mode => ({
+        key: mode,
+        value: mode,
+        label: this.$t(`settings.absolute_time_format_12h_${mode}`)
+      })),
       conversationOtherRepliesButtonOptions: ['below', 'inside'].map(mode => ({
         key: mode,
         value: mode,

src/components/settings_modal/tabs/general_tab.vue

@@ -249,6 +249,16 @@
               {{ $t('settings.absolute_time_format_min_age') }}
             </UnitSetting>
           </li>
+          <li>
+            <ChoiceSetting
+              id="absoluteTime12h"
+              path="absoluteTime12h"
+              :options="absoluteTime12hOptions"
+              :expert="1"
+            >
+              {{ $t('settings.absolute_time_format_12h') }}
+            </ChoiceSetting>
+          </li>
         </ul>
         <h3>{{ $t('settings.attachments') }}</h3>
         <li>