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What time is sunrise and sunset in Cos Cob?

Today and tomorrow's sunrise and sunset times in Cos Cob, Connecticut. Plus a monthly calendar with dawn, dusk, solar noon, and day length.

Today

Sunrise
6:23 AM
80° EDawn 5:55 AM

Sunrise in Cos Cob will be at 6:23:37 AM EDT (in 2 hours).

Sunset
7:22 PM
280° WDusk 7:50 PM

Sunset in Cos Cob will be at 7:22:24 PM EDT (in 15 hours).

Now
12a6a12p6p12a

Night now · First light at 4:47 AM

Daylight
12h 58m
Darkness
7h 48m
Solar noon
12:53 PM
Sun altitude
24.4° below
Sun direction
55° NE

Tomorrow

Sunrise
6:24 AM
80° EDawn 5:56 AM

Sunrise in Cos Cob will be at 6:24:36 AM EDT (in 26 hours).

Sunset
7:20 PM
279° WDusk 7:48 PM

Sunset in Cos Cob will be at 7:20:45 PM EDT (in 39 hours).

Moon tonight

Phase, moonrise and moonset in Cos Cob

Last Quarter
46% illuminated
Moonrise
11:38 PM
Moonset
2:54 PM

Calendar

America/New_York · click a day to expand

DateSunriseSunsetLength
1 Tue6:20 am7:27 pm13:06:40
2 Wed6:21 am7:25 pm13:04:03
3 Thu6:22 am7:24 pm13:01:25
4 Fri6:23 am7:22 pm12:58:46
Friday, September 4
12:58:46 of daylight·−2m 39s vs. yesterday·twilight 5:55 am – 7:50 pm
12a3a6a9a12p3p6p9p12a6:23 am12:53 pm7:22 pmhorizon
Time
4:07 AM
Altitude
-24.5°
Heading
54° NE
Light
Night

4:07 AM, Night, altitude -24.5 degrees

5 Sat6:24 am7:20 pm12:56:08
6 Sun6:25 am7:19 pm12:53:29
7 Mon6:26 am7:17 pm12:50:49
8 Tue6:27 am7:15 pm12:48:09
9 Wed6:28 am7:14 pm12:45:29
10 Thu6:29 am7:12 pm12:42:48
11 Fri6:30 am7:10 pm12:40:08
12 Sat6:31 am7:08 pm12:37:27
13 Sun6:32 am7:07 pm12:34:45
14 Mon6:33 am7:05 pm12:32:04
15 Tue6:34 am7:03 pm12:29:22
16 Wed6:35 am7:02 pm12:26:40
17 Thu6:36 am7:00 pm12:23:58
18 Fri6:37 am6:58 pm12:21:16
19 Sat6:38 am6:57 pm12:18:34
20 Sun6:39 am6:55 pm12:15:52
21 Mon6:40 am6:53 pm12:13:09
22 Tue6:41 am6:51 pm12:10:27
23 Wed6:42 am6:50 pm12:07:45
24 Thu6:43 am6:48 pm12:05:02
25 Fri6:44 am6:46 pm12:02:20
26 Sat6:45 am6:45 pm11:59:37
27 Sun6:46 am6:43 pm11:56:55
28 Mon6:47 am6:41 pm11:54:12
29 Tue6:48 am6:40 pm11:51:30
30 Wed6:49 am6:38 pm11:48:48

FAQ

Frequently asked questions about sunrise and sunset in Cos Cob, United States

What time does the sun rise in Cos Cob today?
Sunrise in Cos Cob today (Friday, September 4, 2026) is at 6:23 AM. The sun comes up in the E.
What time does the sun set in Cos Cob today?
Sunset today is at 7:22 PM, after 12h 58m of daylight.
When is the longest day in Cos Cob, United States?
The longest day of 2026 in Cos Cob is Sunday, June 21, 2026, the summer solstice, with 15h 07m of daylight. In 2027 the summer solstice falls on June 21, 2027.
When is the shortest day in Cos Cob, United States?
The shortest day of 2026 in Cos Cob, Connecticut is Monday, December 21, 2026, the winter solstice, with 9h 13m of daylight. In 2027 the winter solstice lands on December 21, 2027.
How much more daylight does Cos Cob get in summer than in winter?
Cos Cob gets 5h 54m more daylight on its longest day than on its shortest (15h 07m against 9h 13m). Averaged across the year, a day here has 12h 12m of daylight.
When is the earliest sunrise in Cos Cob?
The earliest sunrise of 2026 in Cos Cob is on Sunday, June 14, 2026, when the sun comes up at 5:22 AM.
When is the latest sunset in Cos Cob?
The latest sunset is on Saturday, June 27, 2026 at 8:31 PM.
When is the earliest sunset in Cos Cob?
The earliest sunset of the year is on Tuesday, December 8, 2026, with the sun down by 4:27 PM.
When is the latest sunrise in Cos Cob?
The latest sunrise is on Saturday, October 31, 2026 at 7:25 AM.
Does Cos Cob observe daylight saving time?
Yes. Cos Cob uses Eastern Time: clocks go forward on March 8, 2026, then back on November 1, 2026. Sunrise and sunset times jump by an hour on those dates.

Developers: get this data programmatically with the free JSON API.

GET https://api.sunrisesunset.io/json?lat=41.03343&lng=-73.59957