diff --git a/app/javascript/flavours/glitch/components/edited_timestamp/index.jsx b/app/javascript/flavours/glitch/components/edited_timestamp/index.jsx
index 3dbac58b54..8b67ace2dd 100644
--- a/app/javascript/flavours/glitch/components/edited_timestamp/index.jsx
+++ b/app/javascript/flavours/glitch/components/edited_timestamp/index.jsx
@@ -66,7 +66,7 @@ class EditedTimestamp extends PureComponent {
     return (
       <DropdownMenu statusId={statusId} renderItem={this.renderItem} scrollable renderHeader={this.renderHeader} onItemClick={this.handleItemClick}>
         <button className='dropdown-menu__text-button'>
-          <FormattedMessage id='status.edited' defaultMessage='Edited {date}' values={{ date: intl.formatDate(timestamp, { hour12: false, month: 'short', day: '2-digit', hour: '2-digit', minute: '2-digit' }) }} /> <Icon id='caret-down' />
+          <FormattedMessage id='status.edited' defaultMessage='Edited {date}' values={{ date: intl.formatDate(timestamp, { hourCycle: 'h23', month: 'short', day: '2-digit', hour: '2-digit', minute: '2-digit' }) }} /> <Icon id='caret-down' />
         </button>
       </DropdownMenu>
     );
diff --git a/app/javascript/flavours/glitch/features/status/components/detailed_status.jsx b/app/javascript/flavours/glitch/features/status/components/detailed_status.jsx
index 1770436ae7..57664c7807 100644
--- a/app/javascript/flavours/glitch/features/status/components/detailed_status.jsx
+++ b/app/javascript/flavours/glitch/features/status/components/detailed_status.jsx
@@ -334,7 +334,7 @@ class DetailedStatus extends ImmutablePureComponent {
 
           <div className='detailed-status__meta'>
             <a className='detailed-status__datetime' href={status.get('url')} target='_blank' rel='noopener noreferrer'>
-              <FormattedDate value={new Date(status.get('created_at'))} hour12={false} year='numeric' month='short' day='2-digit' hour='2-digit' minute='2-digit' />
+              <FormattedDate value={new Date(status.get('created_at'))} hourCycle='h23' year='numeric' month='short' day='2-digit' hour='2-digit' minute='2-digit' />
             </a>{edited}{visibilityLink}{applicationLink}{reblogLink} · {favouriteLink}
           </div>
         </div>