What time is it in Diamond Bar, California?

Diamond Bar is currently on daylight saving time. The next change is Sunday, November 1, 2026, when 2:00 am becomes 1:00 am local time.

Diamond Bar sits at 34.00°N, 117.82°W. For sunrise and sunset there — which do depend on exactly where it is, unlike the clock — see sunrise and sunset in Diamond Bar.

The clock says the same thing everywhere in Pacific Daylight Time, but the sun does not. Over Diamond Bar it is highest at 12:42 pm today — 42 minutes after clock noon.

At 117.8°W, Diamond Bar sits comfortably inside its zone. Daylight saving adds another hour on top until the clocks change.

Today runs 12 hours 2 minutes in Diamond Bar, and the day is getting shorter by 2 minutes a day. Across the year it swings 4 hours 32 minutes, from 14 hours 25 minutes at the June solstice down to 9 hours 53 minutes in December.

At 34.0°N that puts Diamond Bar between Kailua at 2 hours 22 minutes and Fairbanks at 18 hours 9 minutes.