diff --git a/dst_test.go b/dst_test.go
new file mode 100644
index 0000000..01d5169
--- /dev/null
+++ b/dst_test.go
@@ -0,0 +1,72 @@
+package rrule
+
+import (
+	"testing"
+	"time"
+)
+
+func TestDST_HourlyDSTStart(t *testing.T) {
+	sydLoc, _ := time.LoadLocation("Australia/Sydney")
+	r, _ := NewRRule(ROption{Freq: HOURLY, Interval: 1, Count: 3,
+		Dtstart: time.Date(2022, 10, 2, 1, 0, 0, 0, sydLoc),
+	})
+	got := r.All()
+	want := []string{
+		"2022-10-02 01:00:00 +1000 AEST",
+		"2022-10-02 03:00:00 +1100 AEDT",
+		"2022-10-02 04:00:00 +1100 AEDT",
+	}
+	for i, g := range got {
+		if g.String() != want[i] {
+			t.Errorf("got: %v, want: %v", g, want[i])
+		}
+	}
+	var utcTimes []time.Time
+	for _, dt := range got {
+		utcTimes = append(utcTimes, dt.UTC())
+	}
+	want = []string{
+		"2022-10-01 15:00:00 +0000 UTC",
+		"2022-10-01 16:00:00 +0000 UTC",
+		"2022-10-01 17:00:00 +0000 UTC",
+	}
+
+	for i, g := range utcTimes {
+		if g.String() != want[i] {
+			t.Errorf("got: %v, want: %v", g, want[i])
+		}
+	}
+}
+
+func TestDST_HourlyDSTEnd(t *testing.T) {
+	sydLoc, _ := time.LoadLocation("Australia/Sydney")
+	r, _ := NewRRule(ROption{Freq: HOURLY, Interval: 1, Count: 3,
+		Dtstart: time.Date(2023, 4, 2, 1, 0, 0, 0, sydLoc),
+	})
+	got := r.All()
+	want := []string{
+		"2023-04-02 01:00:00 +1100 AEDT",
+		"2023-04-02 02:00:00 +1100 AEDT",
+		"2023-04-02 02:00:00 +1000 AEST",
+	}
+	for i, g := range got {
+		if g.String() != want[i] {
+			t.Errorf("got: %v, want: %v", g, want[i])
+		}
+	}
+
+	var utcTimes []time.Time
+	for _, dt := range got {
+		utcTimes = append(utcTimes, dt.UTC())
+	}
+	want = []string{
+		"2023-04-01 14:00:00 +0000 UTC",
+		"2023-04-01 15:00:00 +0000 UTC",
+		"2023-04-01 16:00:00 +0000 UTC",
+	}
+	for i, g := range utcTimes {
+		if g.String() != want[i] {
+			t.Errorf("got: %v, want: %v", g, want[i])
+		}
+	}
+}