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Moon phase calendar January 1981

Day	Phase	Illum.	Age	Rise (Tokyo)	Set (Tokyo)
1 Thu	Waning crescent	24%	24.5	01:50	13:13
2 Fri	Waning crescent	17%	25.5	02:45	13:46
3 Sat	Waning crescent	10%	26.5	03:41	14:23
4 Sun	Waning crescent	5%	27.5	04:37	15:05
5 Mon	New moon	2%	28.5	05:33	15:52
6 Tue	New moon 16:24	0%	29.5	06:27	16:44
7 Wed	New moon	1%	0.8	07:19	17:42
8 Thu	New moon	4%	1.8	08:07	18:43
9 Fri	Waxing crescent	9%	2.8	08:50	19:47
10 Sat	Waxing crescent	16%	3.8	09:31	20:51
11 Sun	Waxing crescent	25%	4.8	10:08	21:57
12 Mon	First quarter	36%	5.8	10:44	23:02
13 Tue	First quarter 19:09	47%	6.8	11:20	–
14 Wed	First quarter	58%	7.8	11:57	00:08
15 Thu	Waxing gibbous	69%	8.8	12:36	01:15
16 Fri	Waxing gibbous	79%	9.8	13:18	02:22
17 Sat	Waxing gibbous	88%	10.8	14:06	03:28
18 Sun	Waxing gibbous	94%	11.8	14:58	04:32
19 Mon	Full moon	98%	12.8	15:55	05:33
20 Tue	Full moon 16:38	100%	13.8	16:55	06:28
21 Wed	Full moon	99%	14.8	17:56	07:16
22 Thu	Full moon	96%	15.8	18:57	07:59
23 Fri	Waning gibbous	92%	16.8	19:56	08:37
24 Sat	Waning gibbous	85%	17.8	20:54	09:11
25 Sun	Waning gibbous	78%	18.8	21:50	09:42
26 Mon	Last quarter	69%	19.8	22:45	10:12
27 Tue	Last quarter	60%	20.8	23:39	10:42
28 Wed	Last quarter 13:18	51%	21.8	–	11:12
29 Thu	Last quarter	41%	22.8	00:34	11:44
30 Fri	Last quarter	32%	23.8	01:29	12:19
31 Sat	Waning crescent	23%	24.8	02:24	12:58

Computed with the JPL DE421 ephemeris and Skyfield (JST). Illumination and age are for 12:00 JST; moonrise and moonset are for Tokyo. Distances are centre to centre. "Supermoon" is not a formal astronomical term.

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Daily moon phase, illumination, age and Tokyo moonrise/moonset for January 1981. Full moon: Jan 20 (379,614 km away).