diff --git a/ext/date/php_date.c b/ext/date/php_date.c
index f1ea3d3a01d..a991c5072f9 100644
--- a/ext/date/php_date.c
+++ b/ext/date/php_date.c
@@ -5516,7 +5516,7 @@ static void php_do_date_sunrise_sunset(INTERNAL_FUNCTION_PARAMETERS, bool calc_s
 	if (N > 24 || N < 0) {
 		N -= floor(N / 24) * 24;
 	}
-	if (N > 24 || N < 0) {
+	if (!(N <= 24 && N >= 0)) {
 		RETURN_FALSE;
 	}
 
diff --git a/ext/date/tests/gh18481.phpt b/ext/date/tests/gh18481.phpt
new file mode 100644
index 00000000000..6617a194744
--- /dev/null
+++ b/ext/date/tests/gh18481.phpt
@@ -0,0 +1,21 @@
+--TEST--
+GH-18481 (date_sunrise with utcOffset as INF)
+--FILE--
+<?php
+
+foreach ([-NAN, NAN, INF, -INF] as $offset) {
+	var_dump(date_sunrise(time(), SUNFUNCS_RET_STRING, 38.4, -9, 90, $offset));
+}
+?>
+--EXPECTF--
+Deprecated: Function date_sunrise() is deprecated in %s on line %d
+bool(false)
+
+Deprecated: Function date_sunrise() is deprecated in %s on line %d
+bool(false)
+
+Deprecated: Function date_sunrise() is deprecated in %s on line %d
+bool(false)
+
+Deprecated: Function date_sunrise() is deprecated in %s on line %d
+bool(false)