diff --git a/NEWS b/NEWS
index 9ae85310388..8e1225b936e 100644
--- a/NEWS
+++ b/NEWS
@@ -8,6 +8,10 @@ PHP                                                                        NEWS
   . Fixed bug GH-19637 (Incorrect Closure scope for FCC in constant
     expression). (timwolla)
 
+- Date:
+  . Fixed date_sunrise() and date_sunset() with partial-hour UTC offset.
+    (ilutov)
+
 - EXIF:
   . Added support to retrieve Exif from HEIF file. (Benstone Zhang)
 
diff --git a/ext/date/php_date.c b/ext/date/php_date.c
index fd4dc05a7ea..e69512cedb4 100644
--- a/ext/date/php_date.c
+++ b/ext/date/php_date.c
@@ -5493,7 +5493,7 @@ static void php_do_date_sunrise_sunset(INTERNAL_FUNCTION_PARAMETERS, bool calc_s
 	t->zone_type = TIMELIB_ZONETYPE_ID;
 
 	if (gmt_offset_is_null) {
-		gmt_offset = timelib_get_current_offset(t) / 3600;
+		gmt_offset = timelib_get_current_offset(t) / 3600.0;
 	}
 
 	timelib_unixtime2local(t, time);
diff --git a/ext/date/tests/sunfuncts_partial_hour_utc_offset.phpt b/ext/date/tests/sunfuncts_partial_hour_utc_offset.phpt
new file mode 100644
index 00000000000..279e40fa654
--- /dev/null
+++ b/ext/date/tests/sunfuncts_partial_hour_utc_offset.phpt
@@ -0,0 +1,18 @@
+--TEST--
+Incorrect timezone detection in date_sunrise() for partial-hour UTC offsets
+--FILE--
+<?php
+date_default_timezone_set('Asia/Kolkata');
+$timestamp = mktime(0, 0, 0, 2, 9, 2025);
+$longitude = 22.57;
+$latitude = 88.36;
+
+echo @date_sunrise($timestamp, SUNFUNCS_RET_STRING, $longitude, $latitude), "\n";
+
+$dt = new DateTime();
+$dt->setTimestamp(date_sun_info($timestamp, $longitude, $latitude)['sunrise']);
+echo $dt->format('H:i'), "\n";
+?>
+--EXPECT--
+06:10
+06:11