diff --git a/pkg/streamingpromql/testdata/ours/functions.test b/pkg/streamingpromql/testdata/ours/functions.test
index fb0ebaef5a..ef1ada5e28 100644
--- a/pkg/streamingpromql/testdata/ours/functions.test
+++ b/pkg/streamingpromql/testdata/ours/functions.test
@@ -682,3 +682,104 @@ eval range from 0 to 7m step 1m last_over_time(some_metric_count[3m])
   some_metric_count{env="prod", cluster="eu"} _ _ _ 0 1 2 3 4
   some_metric_count{env="prod", cluster="us"} _ _ _ 0 2 4 6 8
   some_metric_count{env="prod", cluster="au"} _ _ _ {{count:5}} {{count:10}} {{count:15}} {{count:20}} {{count:25}}
+
+# Test time-related functions.
+load 5m
+    histogram_sample {{schema:0 sum:1 count:1}}
+
+eval range from 0 to 7m step 1m year()
+  {} 1970 1970 1970 1970 1970 1970 1970 1970
+
+eval range from 0 to 7m step 1m time()
+  {} 0 60 120 180 240 300 360 420
+
+eval range from 0 to 7m step 1m year(vector(1136239445))
+  {} 2006 2006 2006 2006 2006 2006 2006 2006
+
+eval range from 0 to 7m step 1m month()
+  {} 1 1 1 1 1 1 1 1
+
+eval range from 0 to 7m step 1m month(vector(1136239445))
+  {} 1 1 1 1 1 1 1 1
+
+eval range from 0 to 7m step 1m day_of_month()
+  {} 1 1 1 1 1 1 1 1
+
+eval range from 0 to 7m step 1m day_of_month(vector(1136239445))
+  {} 2 2 2 2 2 2 2 2
+
+eval range from 0 to 7m step 1m day_of_year()
+  {} 1 1 1 1 1 1 1 1
+
+eval range from 0 to 7m step 1m day_of_year(vector(1136239445))
+  {} 2 2 2 2 2 2 2 2
+
+# Thursday.
+eval range from 0 to 7m step 1m day_of_week()
+  {} 4 4 4 4 4 4 4 4
+
+eval range from 0 to 7m step 1m day_of_week(vector(1136239445))
+  {} 1 1 1 1 1 1 1 1
+
+eval range from 0 to 7m step 1m hour()
+  {} 0 0 0 0 0 0 0 0
+
+eval range from 0 to 7m step 1m hour(vector(1136239445))
+  {} 22 22 22 22 22 22 22 22
+
+eval range from 0 to 7m step 1m minute()
+  {} 0 1 2 3 4 5 6 7
+
+eval range from 0 to 7m step 1m minute(vector(1136239445))
+  {} 4 4 4 4 4 4 4 4
+
+# 2008-12-31 23:59:59 just before leap second.
+eval range from 0 to 7m step 1m year(vector(1230767999))
+  {} 2008 2008 2008 2008 2008 2008 2008 2008
+
+# 2009-01-01 00:00:00 just after leap second.
+eval range from 0 to 7m step 1m year(vector(1230768000))
+  {} 2009 2009 2009 2009 2009 2009 2009 2009
+
+# 2016-02-29 23:59:59 February 29th in leap year.
+eval range from 0 to 7m step 1m month(vector(1456790399)) + day_of_month(vector(1456790399)) / 100
+  {} 2.29 2.29 2.29 2.29 2.29 2.29 2.29 2.29
+
+# 2016-03-01 00:00:00 March 1st in leap year.
+eval range from 0 to 7m step 1m month(vector(1456790400)) + day_of_month(vector(1456790400)) / 100
+  {} 3.01 3.01 3.01 3.01 3.01 3.01 3.01 3.01
+
+# 2016-12-31 13:37:00 366th day in leap year.
+eval range from 0 to 7m step 1m day_of_year(vector(1483191420))
+  {} 366 366 366 366 366 366 366 366
+
+# 2022-12-31 13:37:00 365th day in non-leap year.
+eval range from 0 to 7m step 1m day_of_year(vector(1672493820))
+  {} 365 365 365 365 365 365 365 365
+
+# February 1st 2016 in leap year.
+eval range from 0 to 7m step 1m days_in_month(vector(1454284800))
+  {} 29 29 29 29 29 29 29 29
+
+# February 1st 2017 not in leap year.
+eval range from 0 to 7m step 1m days_in_month(vector(1485907200))
+  {} 28 28 28 28 28 28 28 28
+
+# Test for histograms.
+eval range from 0 to 7m step 1m day_of_month(histogram_sample)
+
+eval range from 0 to 7m step 1m day_of_week(histogram_sample)
+
+eval range from 0 to 7m step 1m day_of_year(histogram_sample)
+
+eval range from 0 to 7m step 1m days_in_month(histogram_sample)
+
+eval range from 0 to 7m step 1m hour(histogram_sample)
+
+eval range from 0 to 7m step 1m  minute(histogram_sample)
+
+eval range from 0 to 7m step 1m  month(histogram_sample)
+
+eval range from 0 to 7m step 1m year(histogram_sample)
+
+clear