diff --git a/ext/date/lib/interval.c b/ext/date/lib/interval.c
index da9262da999b6..d9c751a78eaf0 100644
--- a/ext/date/lib/interval.c
+++ b/ext/date/lib/interval.c
@@ -146,6 +146,7 @@ static timelib_rel_time *timelib_diff_with_tzid(timelib_time *one, timelib_time
 timelib_rel_time *timelib_diff(timelib_time *one, timelib_time *two)
 {
 	timelib_rel_time *rt;
+	timelib_sll sse_diff;
 
 	if (one->zone_type == TIMELIB_ZONETYPE_ID && two->zone_type == TIMELIB_ZONETYPE_ID && strcmp(one->tz_info->name, two->tz_info->name) == 0) {
 		return timelib_diff_with_tzid(one, two);
@@ -172,6 +173,17 @@ timelib_rel_time *timelib_diff(timelib_time *one, timelib_time *two)
 
 	rt->days = timelib_diff_days(one, two);
 
+	/* Use SSE diff when wall-clock dates are inverted */
+	if ((rt->y < 0 || (rt->y == 0 && rt->m < 0)) && (sse_diff = two->sse - one->sse) >= 0) {
+		rt->y = rt->m = rt->d = 0;
+		rt->h = sse_diff / 3600;
+		rt->i = (sse_diff % 3600) / 60;
+		rt->s = sse_diff % 60;
+		rt->days = sse_diff / 86400;
+		timelib_do_rel_normalize(two, rt);
+		return rt;
+	}
+
 	timelib_do_rel_normalize(rt->invert ? one : two, rt);
 
 	return rt;
diff --git a/ext/date/tests/gh13857.phpt b/ext/date/tests/gh13857.phpt
new file mode 100644
index 0000000000000..8164866616bda
--- /dev/null
+++ b/ext/date/tests/gh13857.phpt
@@ -0,0 +1,30 @@
+--TEST--
+Bug GH-13857 (Unexpected Results with date_diff for Different Timezones) wall-clock dates are inverted.
+--FILE--
+<?php
+date_default_timezone_set('Asia/Tokyo');
+$nowDate = (new DateTime('2024-04-01 00:49:22'))->setTimeZone(new DateTimeZone('Asia/Tokyo'));
+$endDate = (new DateTime('2024-04-01 08:48:22'))->setTimeZone(new DateTimeZone('UTC'));
+
+echo "nowDate: ", $nowDate->format('Y-m-d H:i:s T'), "\n";
+echo "endDate: ", $endDate->format('Y-m-d H:i:s T'), "\n";
+
+$diff = date_diff($nowDate, $endDate);
+echo "diff: ", $diff->format('%R %Y-%M-%D %H:%I:%S'), "\n";
+echo "days: ", $diff->days, "\n";
+
+$diff2 = date_diff($endDate, $nowDate);
+echo "reversed: ", $diff2->format('%R %Y-%M-%D %H:%I:%S'), "\n";
+
+$a = new DateTime('2024-04-01 00:49:22', new DateTimeZone('+09:00'));
+$b = new DateTime('2024-03-31 23:48:22', new DateTimeZone('+00:00'));
+$diff3 = $a->diff($b);
+echo "offset TZ: ", $diff3->format('%R %Y-%M-%D %H:%I:%S'), "\n";
+?>
+--EXPECT--
+nowDate: 2024-04-01 00:49:22 JST
+endDate: 2024-03-31 23:48:22 UTC
+diff: + 00-00-00 07:59:00
+days: 0
+reversed: - 00-00-00 07:59:00
+offset TZ: + 00-00-00 07:59:00