December 2021 - Boston, MA - Sunrise and sunset calendar
Sunrise and sunset times, civil twilight start and end times as well as solar noon, and day length for every day of December 2021 in Boston, MA.
All times are in Boston's time: Eastern Standard Time (EST, UTC−5).
Eclipses in December 2021 and what can be seen of them from Boston:
- December 4, 2021: Solar eclipse, not visible from here.
| Day | First LightStart of civil twilight: the Sun is 6° below the horizon, and there is enough light to be outdoors without artificial light. | SunriseWhen the top edge of the Sun appears over a flat, clear horizon. Behind hills, mountains or buildings the Sun appears a few minutes later (or more in a valley). | Sunrise Variation |
SunsetWhen the top edge of the Sun disappears below a flat, clear horizon. Behind hills, mountains or buildings the Sun disappears a few minutes earlier (or more in a valley). | Sunset Variation |
Last LightEnd of civil twilight: the Sun reaches 6° below the horizon, and from then on artificial light is needed outdoors. | Day Length | Day Length Variation | Solar NoonTime of day when the sun reaches its highest point in the sky. | Max Sun Altitude | Nautical Twilight Start | Nautical Twilight End | Astronomical Twilight Start | Astronomical Twilight End | Night Length | Moon phase | Solar Midnight | Sun DeclinationThe latitude where the Sun is directly overhead at solar noon (the Sun's declination). It moves between the two tropics through the year. | Moonrise | Moonset |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wed, Dec 1 | Twilight startStart of civil twilight: the Sun is 6° below the horizon, and there is enough light to be outdoors without artificial light.6:22:41 am | 6:54:03 am | +1m 4s | 4:12:33 pm | -18s | Twilight endEnd of civil twilight: the Sun reaches 6° below the horizon, and from then on artificial light is needed outdoors.4:43:55 pm | 09:18:30 | -1m 23s | Solar noonTime of day when the sun reaches its highest point in the sky.11:33:26 am | 25.74° | 5:47:44 am | 5:18:51 pm | 5:13:53 am | 5:52:41 pm | Night lengthCalculated from this day's sunset to the next day's sunrise.14:42:33 | 🌘 (7%)Waning Crescent: 7% illuminated at midnight, at the end of the day | 11:33:38 pm | 21.9° S | ||
| Thu, Dec 2 | 6:23:40 am | 6:55:06 am | +1m 3s | 4:12:17 pm | -16s | 4:43:42 pm | 09:17:11 | -1m 19s | 11:33:49 am | 25.59° | 5:48:40 am | 5:18:42 pm | 5:14:48 am | 5:52:34 pm | 14:43:51 | 🌘 (2%)Waning Crescent: 2% illuminated at midnight, at the end of the day | 11:34:01 pm | 22.1° S | ||
| Fri, Dec 3 | 6:24:39 am | 6:56:08 am | +1m 2s | 4:12:03 pm | -14s | 4:43:32 pm | 09:15:55 | -1m 15s | 11:34:13 am | 25.45° | 5:49:36 am | 5:18:34 pm | 5:15:41 am | 5:52:29 pm | 14:45:06 | 🌘 (0.0%)Waning Crescent: 0.0% illuminated at midnight, at the end of the day | 11:34:25 pm | 22.2° S | ||
| Sat, Dec 4 | 6:25:36 am | 6:57:09 am | +1m 1s | 4:11:52 pm | -11s | 4:43:24 pm | 09:14:43 | -1m 12s | 11:34:37 am | 25.32° | 5:50:31 am | 5:18:29 pm | 5:16:34 am | 5:52:25 pm | 14:46:16 | 🌑 (1%) New moon at 2:43 amNew moon at 2:43 am. At midnight, at the end of the day: 1% illuminated |
11:34:50 pm | 22.3° S | ||
| Sun, Dec 5 | 6:26:32 am | 6:58:08 am | +59s | 4:11:43 pm | -9s | 4:43:19 pm | 09:13:35 | -1m 8s | 11:35:02 am | 25.19° | 5:51:25 am | 5:18:26 pm | 5:17:26 am | 5:52:24 pm | 14:47:23 | 🌒 (5%)Waxing Crescent: 5% illuminated at midnight, at the end of the day | 11:35:15 pm | 22.5° S | ||
| Mon, Dec 6 | 6:27:27 am | 6:59:06 am | +58s | 4:11:37 pm | -6s | 4:43:15 pm | 09:12:31 | -1m 4s | 11:35:27 am | 25.07° | 5:52:17 am | 5:18:25 pm | 5:18:17 am | 5:52:25 pm | 14:48:25 | 🌒 (12%)Waxing Crescent: 12% illuminated at midnight, at the end of the day | 11:35:40 pm | 22.6° S | ||
| Tue, Dec 7 | 6:28:21 am | 7:00:02 am | +56s | 4:11:33 pm | -4s | 4:43:14 pm | 09:11:31 | -1m 1s | 11:35:53 am | 24.96° | 5:53:09 am | 5:18:26 pm | 5:19:07 am | 5:52:28 pm | 14:49:24 | 🌒 (21%)Waxing Crescent: 21% illuminated at midnight, at the end of the day | 11:36:07 pm | 22.7° S | ||
| Wed, Dec 8 | 6:29:14 am | 7:00:57 am | +55s | 4:11:31 pm | -2s | 4:43:15 pm | 09:10:34 | -57s | 11:36:20 am | 24.86° | 5:53:59 am | 5:18:30 pm | 5:19:55 am | 5:52:33 pm | 14:50:20 | 🌒 (31%)Waxing Crescent: 31% illuminated at midnight, at the end of the day | 11:36:33 pm | 22.8° S | ||
| Thu, Dec 9 | 6:30:05 am | 7:01:51 am | +54s | 4:11:32 pm | +1s | 4:43:18 pm | 09:09:41 | -53s | 11:36:46 am | 24.76° | 5:54:48 am | 5:18:35 pm | 5:20:43 am | 5:52:40 pm | 14:51:11 | 🌒 (41%)Waxing Crescent: 41% illuminated at midnight, at the end of the day | 11:37:00 pm | 22.9° S | ||
| Fri, Dec 10 | 6:30:54 am | 7:02:43 am | +52s | 4:11:35 pm | +3s | 4:43:24 pm | 09:08:52 | -49s | 11:37:14 am | 24.67° | 5:55:36 am | 5:18:43 pm | 5:21:29 am | 5:52:48 pm | 14:51:58 | 🌓 (52%) First quarter at 8:35 pmFirst quarter at 8:35 pm. At midnight, at the end of the day: 52% illuminated |
11:37:28 pm | 23.0° S | ||
| Sat, Dec 11 | 6:31:43 am | 7:03:33 am | +50s | 4:11:41 pm | +6s | 4:43:32 pm | 09:08:08 | -45s | 11:37:41 am | 24.59° | 5:56:22 am | 5:18:52 pm | 5:22:15 am | 5:52:59 pm | 14:52:41 | 🌔 (62%)Waxing Gibbous: 62% illuminated at midnight, at the end of the day | 11:37:55 pm | 23.0° S | ||
| Sun, Dec 12 | 6:32:29 am | 7:04:22 am | +49s | 4:11:49 pm | +8s | 4:43:42 pm | 09:07:27 | -40s | 11:38:09 am | 24.52° | 5:57:07 am | 5:19:04 pm | 5:22:59 am | 5:53:12 pm | 14:53:20 | 🌔 (71%)Waxing Gibbous: 71% illuminated at midnight, at the end of the day | 11:38:24 pm | 23.1° S | ||
| Mon, Dec 13 | 6:33:14 am | 7:05:09 am | +47s | 4:12:00 pm | +11s | 4:43:54 pm | 09:06:51 | -36s | 11:38:38 am | 24.45° | 5:57:51 am | 5:19:18 pm | 5:23:41 am | 5:53:27 pm | 14:53:54 | 🌔 (79%)Waxing Gibbous: 79% illuminated at midnight, at the end of the day | 11:38:52 pm | 23.2° S | ||
| Tue, Dec 14 | 6:33:58 am | 7:05:54 am | +45s | 4:12:13 pm | +13s | 4:44:09 pm | 09:06:19 | -32s | 11:39:06 am | 24.39° | 5:58:33 am | 5:19:33 pm | 5:24:23 am | 5:53:44 pm | 14:54:24 | 🌔 (87%)Waxing Gibbous: 87% illuminated at midnight, at the end of the day | 11:39:21 pm | 23.2° S | ||
| Wed, Dec 15 | 6:34:40 am | 7:06:37 am | +43s | 4:12:28 pm | +15s | 4:44:25 pm | 09:05:51 | -28s | 11:39:35 am | 24.34° | 5:59:14 am | 5:19:51 pm | 5:25:03 am | 5:54:02 pm | 14:54:50 | 🌔 (92%)Waxing Gibbous: 92% illuminated at midnight, at the end of the day | 11:39:50 pm | 23.3° S | ||
| Thu, Dec 16 | 6:35:20 am | 7:07:18 am | +41s | 4:12:46 pm | +18s | 4:44:44 pm | 09:05:28 | -24s | 11:40:04 am | 24.30° | 5:59:53 am | 5:20:11 pm | 5:25:41 am | 5:54:23 pm | 14:55:12 | 🌔 (97%)Waxing Gibbous: 97% illuminated at midnight, at the end of the day | 11:40:19 pm | 23.3° S | ||
| Fri, Dec 17 | 6:35:58 am | 7:07:58 am | +40s | 4:13:06 pm | +20s | 4:45:05 pm | 09:05:08 | -19s | 11:40:33 am | 24.27° | 6:00:31 am | 5:20:33 pm | 5:26:18 am | 5:54:45 pm | 14:55:29 | 🌔 (99%)Waxing Gibbous: 99% illuminated at midnight, at the end of the day | 11:40:48 pm | 23.4° S | ||
| Sat, Dec 18 | 6:36:35 am | 7:08:35 am | +37s | 4:13:28 pm | +22s | 4:45:28 pm | 09:04:53 | -15s | 11:41:03 am | 24.24° | 6:01:07 am | 5:20:56 pm | 5:26:54 am | 5:55:09 pm | 14:55:42 | 🌕 (99.9%) Full moon at 11:35 pmFull moon at 11:35 pm. At midnight, at the end of the day: 99.9% illuminated |
11:41:18 pm | 23.4° S | ||
| Sun, Dec 19 | 6:37:10 am | 7:09:10 am | +35s | 4:13:53 pm | +25s | 4:45:53 pm | 09:04:43 | -11s | 11:41:32 am | 24.22° | 6:01:41 am | 5:21:22 pm | 5:27:28 am | 5:55:35 pm | 14:55:51 | 🌖 (99%)Waning Gibbous: 99% illuminated at midnight, at the end of the day | 11:41:47 pm | 23.4° S | ||
| Mon, Dec 20 | 6:37:43 am | 7:09:44 am | +34s | 4:14:20 pm | +27s | 4:46:20 pm | 09:04:36 | -6s | 11:42:02 am | 24.21° | 6:02:14 am | 5:21:49 pm | 5:28:01 am | 5:56:03 pm | 14:55:55 | 🌖 (96%)Waning Gibbous: 96% illuminated at midnight, at the end of the day | 11:42:17 pm | 23.4° S | ||
| Tue, Dec 21 | 6:38:14 am | 7:10:15 am | +31s | 4:14:49 pm | +29s | 4:46:50 pm | 09:04:34 | -2s | 11:42:32 am | 24.21° | 6:02:45 am | 5:22:19 pm | 5:28:31 am | 5:56:32 pm | 14:55:55 | 🌖 (92%)Waning Gibbous: 92% illuminated at midnight, at the end of the day | 11:42:47 pm | 23.4° S | ||
| Wed, Dec 22 | 6:38:43 am | 7:10:44 am | +29s | 4:15:20 pm | +31s | 4:47:21 pm | 09:04:36 | 2s | 11:43:02 am | 24.21° | 6:03:14 am | 5:22:50 pm | 5:29:01 am | 5:57:03 pm | 14:55:51 | 🌖 (86%)Waning Gibbous: 86% illuminated at midnight, at the end of the day | 11:43:17 pm | 23.4° S | ||
| Thu, Dec 23 | 6:39:10 am | 7:11:11 am | +27s | 4:15:54 pm | +34s | 4:47:54 pm | 09:04:43 | 7s | 11:43:31 am | 24.22° | 6:03:42 am | 5:23:23 pm | 5:29:28 am | 5:57:36 pm | 14:55:41 | 🌖 (78%)Waning Gibbous: 78% illuminated at midnight, at the end of the day | 11:43:46 pm | 23.4° S | ||
| Fri, Dec 24 | 6:39:35 am | 7:11:35 am | +24s | 4:16:29 pm | +35s | 4:48:29 pm | 09:04:54 | 11s | 11:44:01 am | 24.24° | 6:04:07 am | 5:23:58 pm | 5:29:54 am | 5:58:10 pm | 14:55:29 | 🌖 (69%)Waning Gibbous: 69% illuminated at midnight, at the end of the day | 11:44:16 pm | 23.4° S | ||
| Sat, Dec 25 | 6:39:58 am | 7:11:58 am | +23s | 4:17:07 pm | +38s | 4:49:06 pm | 09:05:09 | 15s | 11:44:31 am | 24.27° | 6:04:31 am | 5:24:34 pm | 5:30:19 am | 5:58:46 pm | 14:55:11 | 🌖 (60%)Waning Gibbous: 60% illuminated at midnight, at the end of the day | 11:44:46 pm | 23.4° S | ||
| Sun, Dec 26 | 6:40:20 am | 7:12:18 am | +20s | 4:17:47 pm | +40s | 4:49:45 pm | 09:05:29 | 20s | 11:45:00 am | 24.31° | 6:04:53 am | 5:25:12 pm | 5:30:41 am | 5:59:24 pm | 14:54:49 | 🌗 (49%) Last quarter at 9:23 pmLast quarter at 9:23 pm. At midnight, at the end of the day: 49% illuminated |
11:45:15 pm | 23.3° S | ||
| Mon, Dec 27 | 6:40:39 am | 7:12:36 am | +18s | 4:18:29 pm | +42s | 4:50:26 pm | 09:05:53 | 24s | 11:45:30 am | 24.35° | 6:05:13 am | 5:25:52 pm | 5:31:02 am | 6:00:03 pm | 14:54:22 | 🌘 (38%)Waning Crescent: 38% illuminated at midnight, at the end of the day | 11:45:45 pm | 23.3° S | ||
| Tue, Dec 28 | 6:40:55 am | 7:12:51 am | +15s | 4:19:13 pm | +44s | 4:51:08 pm | 09:06:22 | 28s | 11:45:59 am | 24.40° | 6:05:31 am | 5:26:33 pm | 5:31:20 am | 6:00:44 pm | 14:53:51 | 🌘 (28%)Waning Crescent: 28% illuminated at midnight, at the end of the day | 11:46:14 pm | 23.2° S | ||
| Wed, Dec 29 | 6:41:10 am | 7:13:04 am | +13s | 4:19:58 pm | +45s | 4:51:53 pm | 09:06:54 | 33s | 11:46:28 am | 24.46° | 6:05:47 am | 5:27:16 pm | 5:31:37 am | 6:01:26 pm | 14:53:17 | 🌘 (18%)Waning Crescent: 18% illuminated at midnight, at the end of the day | 11:46:43 pm | 23.2° S | ||
| Thu, Dec 30 | 6:41:23 am | 7:13:15 am | +11s | 4:20:46 pm | +48s | 4:52:38 pm | 09:07:31 | 37s | 11:46:57 am | 24.53° | 6:06:01 am | 5:28:00 pm | 5:31:53 am | 6:02:09 pm | 14:52:38 | 🌘 (10%)Waning Crescent: 10% illuminated at midnight, at the end of the day | 11:47:11 pm | 23.1° S | ||
| Fri, Dec 31 | 6:41:33 am | 7:13:24 am | +9s | 4:21:35 pm | +49s | 4:53:26 pm | 09:08:11 | 41s | 11:47:25 am | 24.60° | 6:06:13 am | 5:28:46 pm | 5:32:06 am | 6:02:54 pm | 14:51:55 | 🌘 (4%)Waning Crescent: 4% illuminated at midnight, at the end of the day | 11:47:40 pm | 23.0° S |
How the days change in December 2021 in Boston
In December 2021 the day length in Boston, Massachusetts shortens by 14 minutes until the solstice on December 21, 2021 (9 hours, 4 minutes), then increases by 4 minutes by the end of the month. The average day length was 9 hours, 8 minutes.
Sunrise ranged from 6:54 am to 7:13 am (average 7:06 am) and moved 19 minutes later over the month. Sunset ranged from 4:11 pm to 4:21 pm (average 4:14 pm) and moved 9 minutes later.
View:
SunriseSunsetSolar NoonVertical steps in the curves = DST clock change
December 2021 day length compared with the other months of the year in Boston
| Month | Average day length | Compared with December 2021 | |
|---|---|---|---|
| January | 9 hours, 30 minutes | +22m | |
| February | 10 hours, 35 minutes | +1h 27m | |
| March | 11 hours, 58 minutes | +2h 50m | |
| April | 13 hours, 24 minutes | +4h 16m | |
| May | 14 hours, 37 minutes | +5h 29m | |
| June | 15 hours, 13 minutes | +6h 5m | |
| July | 14 hours, 54 minutes | +5h 46m | |
| August | 13 hours, 49 minutes | +4h 41m | |
| September | 12 hours, 27 minutes | +3h 19m | |
| October | 11 hours, 2 minutes | +1h 54m | |
| November | 9 hours, 47 minutes | +39m | |
| December | 9 hours, 8 minutes | — |
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