diff --git a/src/wp-admin/includes/ajax-actions.php b/src/wp-admin/includes/ajax-actions.php
index c565817914..f273c4df6f 100644
--- a/src/wp-admin/includes/ajax-actions.php
+++ b/src/wp-admin/includes/ajax-actions.php
@@ -1464,7 +1464,7 @@ function wp_ajax_add_meta() {
 			$post_data['post_ID']     = $pid;
 			$post_data['post_type']   = $post->post_type;
 			$post_data['post_status'] = 'draft';
-			$now                      = current_time( 'timestamp', 1 );
+			$now                      = time();
 			/* translators: 1: Post creation date, 2: Post creation time */
 			$post_data['post_title'] = sprintf( __( 'Draft created on %1$s at %2$s' ), date( __( 'F j, Y' ), $now ), date( __( 'g:i a' ), $now ) );
 
diff --git a/src/wp-admin/includes/dashboard.php b/src/wp-admin/includes/dashboard.php
index 7bebe3ff20..e3e8cca9a7 100644
--- a/src/wp-admin/includes/dashboard.php
+++ b/src/wp-admin/includes/dashboard.php
@@ -858,8 +858,9 @@ function wp_dashboard_recent_posts( $args ) {
 
 		echo '<ul>';
 
-		$today    = date( 'Y-m-d', current_time( 'timestamp' ) );
-		$tomorrow = date( 'Y-m-d', strtotime( '+1 day', current_time( 'timestamp' ) ) );
+		$today    = current_time( 'Y-m-d' );
+		$tomorrow = gmdate( 'Y-m-d', strtotime( '+1 day', current_time( 'timestamp' ) ) );
+		$year     = current_time( 'Y' );
 
 		while ( $posts->have_posts() ) {
 			$posts->the_post();
@@ -869,7 +870,7 @@ function wp_dashboard_recent_posts( $args ) {
 				$relative = __( 'Today' );
 			} elseif ( date( 'Y-m-d', $time ) == $tomorrow ) {
 				$relative = __( 'Tomorrow' );
-			} elseif ( date( 'Y', $time ) !== date( 'Y', current_time( 'timestamp' ) ) ) {
+			} elseif ( date( 'Y', $time ) !== $year ) {
 				/* translators: date and time format for recent posts on the dashboard, from a different calendar year, see https://secure.php.net/date */
 				$relative = date_i18n( __( 'M jS Y' ), $time );
 			} else {
diff --git a/src/wp-admin/includes/template.php b/src/wp-admin/includes/template.php
index 6336ee3d2d..a06f9228aa 100644
--- a/src/wp-admin/includes/template.php
+++ b/src/wp-admin/includes/template.php
@@ -774,20 +774,19 @@ function touch_time( $edit = 1, $for_post = 1, $tab_index = 0, $multi = 0 ) {
 	// todo: Remove this?
 	// echo '<label for="timestamp" style="display: block;"><input type="checkbox" class="checkbox" name="edit_date" value="1" id="timestamp"'.$tab_index_attribute.' /> '.__( 'Edit timestamp' ).'</label><br />';
 
-	$time_adj  = current_time( 'timestamp' );
 	$post_date = ( $for_post ) ? $post->post_date : get_comment()->comment_date;
-	$jj        = ( $edit ) ? mysql2date( 'd', $post_date, false ) : gmdate( 'd', $time_adj );
-	$mm        = ( $edit ) ? mysql2date( 'm', $post_date, false ) : gmdate( 'm', $time_adj );
-	$aa        = ( $edit ) ? mysql2date( 'Y', $post_date, false ) : gmdate( 'Y', $time_adj );
-	$hh        = ( $edit ) ? mysql2date( 'H', $post_date, false ) : gmdate( 'H', $time_adj );
-	$mn        = ( $edit ) ? mysql2date( 'i', $post_date, false ) : gmdate( 'i', $time_adj );
-	$ss        = ( $edit ) ? mysql2date( 's', $post_date, false ) : gmdate( 's', $time_adj );
+	$jj        = ( $edit ) ? mysql2date( 'd', $post_date, false ) : current_time( 'd' );
+	$mm        = ( $edit ) ? mysql2date( 'm', $post_date, false ) : current_time( 'm' );
+	$aa        = ( $edit ) ? mysql2date( 'Y', $post_date, false ) : current_time( 'Y' );
+	$hh        = ( $edit ) ? mysql2date( 'H', $post_date, false ) : current_time( 'H' );
+	$mn        = ( $edit ) ? mysql2date( 'i', $post_date, false ) : current_time( 'i' );
+	$ss        = ( $edit ) ? mysql2date( 's', $post_date, false ) : current_time( 's' );
 
-	$cur_jj = gmdate( 'd', $time_adj );
-	$cur_mm = gmdate( 'm', $time_adj );
-	$cur_aa = gmdate( 'Y', $time_adj );
-	$cur_hh = gmdate( 'H', $time_adj );
-	$cur_mn = gmdate( 'i', $time_adj );
+	$cur_jj = current_time( 'd' );
+	$cur_mm = current_time( 'm' );
+	$cur_aa = current_time( 'Y' );
+	$cur_hh = current_time( 'H' );
+	$cur_mn = current_time( 'i' );
 
 	$month = '<label><span class="screen-reader-text">' . __( 'Month' ) . '</span><select ' . ( $multi ? '' : 'id="mm" ' ) . 'name="mm"' . $tab_index_attribute . ">\n";
 	for ( $i = 1; $i < 13; $i = $i + 1 ) {
diff --git a/src/wp-admin/includes/user.php b/src/wp-admin/includes/user.php
index 56224cfb65..356a7c68fc 100644
--- a/src/wp-admin/includes/user.php
+++ b/src/wp-admin/includes/user.php
@@ -1392,7 +1392,7 @@ abstract class WP_Privacy_Requests_Table extends WP_List_Table {
 			return '';
 		}
 
-		$time_diff = current_time( 'timestamp', true ) - $timestamp;
+		$time_diff = time() - $timestamp;
 
 		if ( $time_diff >= 0 && $time_diff < DAY_IN_SECONDS ) {
 			/* translators: human readable timestamp */
diff --git a/src/wp-includes/general-template.php b/src/wp-includes/general-template.php
index 11d4b77ff4..f63bafb406 100644
--- a/src/wp-includes/general-template.php
+++ b/src/wp-includes/general-template.php
@@ -2005,7 +2005,6 @@ function get_calendar( $initial = true, $echo = true ) {
 	}
 	// week_begins = 0 stands for Sunday
 	$week_begins = (int) get_option( 'start_of_week' );
-	$ts          = current_time( 'timestamp' );
 
 	// Let's figure out when we are
 	if ( ! empty( $monthnum ) && ! empty( $year ) ) {
@@ -2025,8 +2024,8 @@ function get_calendar( $initial = true, $echo = true ) {
 			$thismonth = zeroise( (int) substr( $m, 4, 2 ), 2 );
 		}
 	} else {
-		$thisyear  = gmdate( 'Y', $ts );
-		$thismonth = gmdate( 'm', $ts );
+		$thisyear  = current_time( 'Y' );
+		$thismonth = current_time( 'm' );
 	}
 
 	$unixmonth = mktime( 0, 0, 0, $thismonth, 1, $thisyear );
@@ -2136,9 +2135,9 @@ function get_calendar( $initial = true, $echo = true ) {
 		}
 		$newrow = false;
 
-		if ( $day == gmdate( 'j', $ts ) &&
-			$thismonth == gmdate( 'm', $ts ) &&
-			$thisyear == gmdate( 'Y', $ts ) ) {
+		if ( $day == current_time( 'j' ) &&
+			$thismonth == current_time( 'm' ) &&
+			$thisyear == current_time( 'Y' ) ) {
 			$calendar_output .= '<td id="today">';
 		} else {
 			$calendar_output .= '<td>';
diff --git a/src/wp-includes/link-template.php b/src/wp-includes/link-template.php
index be39e36279..ef604dcc7d 100644
--- a/src/wp-includes/link-template.php
+++ b/src/wp-includes/link-template.php
@@ -470,7 +470,7 @@ function get_attachment_link( $post = null, $leavename = false ) {
 function get_year_link( $year ) {
 	global $wp_rewrite;
 	if ( ! $year ) {
-		$year = gmdate( 'Y', current_time( 'timestamp' ) );
+		$year = current_time( 'Y' );
 	}
 	$yearlink = $wp_rewrite->get_year_permastruct();
 	if ( ! empty( $yearlink ) ) {
@@ -505,10 +505,10 @@ function get_year_link( $year ) {
 function get_month_link( $year, $month ) {
 	global $wp_rewrite;
 	if ( ! $year ) {
-		$year = gmdate( 'Y', current_time( 'timestamp' ) );
+		$year = current_time( 'Y' );
 	}
 	if ( ! $month ) {
-		$month = gmdate( 'm', current_time( 'timestamp' ) );
+		$month = current_time( 'm' );
 	}
 	$monthlink = $wp_rewrite->get_month_permastruct();
 	if ( ! empty( $monthlink ) ) {
@@ -546,13 +546,13 @@ function get_month_link( $year, $month ) {
 function get_day_link( $year, $month, $day ) {
 	global $wp_rewrite;
 	if ( ! $year ) {
-		$year = gmdate( 'Y', current_time( 'timestamp' ) );
+		$year = current_time( 'Y' );
 	}
 	if ( ! $month ) {
-		$month = gmdate( 'm', current_time( 'timestamp' ) );
+		$month = current_time( 'm' );
 	}
 	if ( ! $day ) {
-		$day = gmdate( 'j', current_time( 'timestamp' ) );
+		$day = current_time( 'j' );
 	}
 
 	$daylink = $wp_rewrite->get_day_permastruct();
diff --git a/src/wp-includes/ms-functions.php b/src/wp-includes/ms-functions.php
index 620e9c9194..75dab9e09c 100644
--- a/src/wp-includes/ms-functions.php
+++ b/src/wp-includes/ms-functions.php
@@ -518,7 +518,7 @@ function wpmu_validate_user_signup( $user_name, $user_email ) {
 	$signup = $wpdb->get_row( $wpdb->prepare( "SELECT * FROM $wpdb->signups WHERE user_login = %s", $user_name ) );
 	if ( $signup != null ) {
 		$registered_at = mysql2date( 'U', $signup->registered );
-		$now           = current_time( 'timestamp', true );
+		$now           = time();
 		$diff          = $now - $registered_at;
 		// If registered more than two days ago, cancel registration and let this signup go through.
 		if ( $diff > 2 * DAY_IN_SECONDS ) {
@@ -530,7 +530,7 @@ function wpmu_validate_user_signup( $user_name, $user_email ) {
 
 	$signup = $wpdb->get_row( $wpdb->prepare( "SELECT * FROM $wpdb->signups WHERE user_email = %s", $user_email ) );
 	if ( $signup != null ) {
-		$diff = current_time( 'timestamp', true ) - mysql2date( 'U', $signup->registered );
+		$diff = time() - mysql2date( 'U', $signup->registered );
 		// If registered more than two days ago, cancel registration and let this signup go through.
 		if ( $diff > 2 * DAY_IN_SECONDS ) {
 			$wpdb->delete( $wpdb->signups, array( 'user_email' => $user_email ) );
@@ -688,7 +688,7 @@ function wpmu_validate_blog_signup( $blogname, $blog_title, $user = '' ) {
 	// Has someone already signed up for this domain?
 	$signup = $wpdb->get_row( $wpdb->prepare( "SELECT * FROM $wpdb->signups WHERE domain = %s AND path = %s", $mydomain, $path ) ); // TODO: Check email too?
 	if ( ! empty( $signup ) ) {
-		$diff = current_time( 'timestamp', true ) - mysql2date( 'U', $signup->registered );
+		$diff = time() - mysql2date( 'U', $signup->registered );
 		// If registered more than two days ago, cancel registration and let this signup go through.
 		if ( $diff > 2 * DAY_IN_SECONDS ) {
 			$wpdb->delete(