What time is it in Waltham, Massachusetts?

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

Waltham sits at 42.39°N, 71.24°W. For sunrise and sunset there — which do depend on exactly where it is, unlike the clock — see sunrise and sunset in Waltham.

The clock says the same thing everywhere in Eastern Daylight Time, but the sun does not. Over Waltham it is highest at 12:36 pm today — 36 minutes after clock noon.

At 71.2°W, Waltham sits comfortably inside its zone. Daylight saving adds another hour on top until the clocks change.

Today runs 12 hours 1 minute in Waltham, and the day is getting shorter by 3 minutes a day. Across the year it swings 6 hours 13 minutes, from 15 hours 17 minutes at the June solstice down to 9 hours 4 minutes in December.

At 42.4°N that puts Waltham between Kailua at 2 hours 22 minutes and Fairbanks at 18 hours 9 minutes.