New moon calendar 2027

2027 has 13 new moons. The nights around each one are the darkest of the month, when faint galaxies and nebulae show best. Times are in UTC.

202620272028

Dark weeks in 2027

Dates when the moon is no more than 20% lit at midnight UTC. On these nights it rises late or sets early, leaving long stretches of full darkness. For the exact moon-free hours at your location, use the dark sky calendar.

New moon	Time (UTC)	Dark week
7 Jan 2027	20:25	4 to 12 January
6 Feb 2027	15:56	2 to 11 February
8 Mar 2027	09:30	4 to 12 March
6 Apr 2027	23:51	3 to 11 April
6 May 2027	10:59	3 to 10 May
4 Jun 2027	19:40	1 to 8 June
4 Jul 2027	03:02	1 to 7 July
2 Aug 2027	10:05	30 July to 6 August
31 Aug 2027	17:41	28 August to 4 September
30 Sep 2027	02:36	27 September to 4 October
29 Oct 2027	13:37	26 October to 2 November
28 Nov 2027	03:24	24 November to 2 December
27 Dec 2027	20:12	24 December to 1 January

All moon phases in 2027

Month	Phases (UTC)
January	New moon 7 Jan, 20:25First quarter 15 Jan, 20:35Full moon 22 Jan, 12:17Last quarter 29 Jan, 10:56
February	New moon 6 Feb, 15:56First quarter 14 Feb, 07:59Full moon 20 Feb, 23:24Last quarter 28 Feb, 05:17
March	New moon 8 Mar, 09:30First quarter 15 Mar, 16:25Full moon 22 Mar, 10:44Last quarter 30 Mar, 00:54
April	New moon 6 Apr, 23:51First quarter 13 Apr, 22:57Full moon 20 Apr, 22:27Last quarter 28 Apr, 20:18
May	New moon 6 May, 10:59First quarter 13 May, 04:44Full moon 20 May, 10:59Last quarter 28 May, 13:58
June	New moon 4 Jun, 19:40First quarter 11 Jun, 10:56Full moon 19 Jun, 00:45Last quarter 27 Jun, 04:54
July	New moon 4 Jul, 03:02First quarter 10 Jul, 18:39Full moon 18 Jul, 15:45Last quarter 26 Jul, 16:55
August	New moon 2 Aug, 10:05First quarter 9 Aug, 04:54Full moon 17 Aug, 07:29Last quarter 25 Aug, 02:27New moon 31 Aug, 17:41
September	First quarter 7 Sep, 18:31Full moon 15 Sep, 23:04Last quarter 23 Sep, 10:21New moon 30 Sep, 02:36
October	First quarter 7 Oct, 11:48Full moon 15 Oct, 13:47Last quarter 22 Oct, 17:29New moon 29 Oct, 13:37
November	First quarter 6 Nov, 08:00Full moon 14 Nov, 03:26Last quarter 21 Nov, 00:48New moon 28 Nov, 03:24
December	First quarter 6 Dec, 05:22Full moon 13 Dec, 16:09Last quarter 20 Dec, 09:11New moon 27 Dec, 20:12

Filters for moonlit nights

On about 70% of the nights in 2027 the moon is more than 20% lit. Narrowband and dual-band filters pass the light of emission nebulae and block most moonlight, so those nights are not lost.

Optolong L-Ultimate 3 nm 3 nm dual-band, Ha, OIII, for color cameras View at High Point Scientific
Antlia ALP-T 5 nm 5 nm dual-band, Ha, OIII, for color cameras View at High Point Scientific
Optolong L-eXtreme 7 nm 7 nm dual-band, Ha, OIII, for color cameras View at High Point Scientific
Antlia 3 nm Pro H-alpha 3 nm H-alpha, for mono cameras View at High Point Scientific

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Why the new moon matters

A full moon brightens the sky by several magnitudes and washes out galaxies, reflection nebulae and faint dust. Around new moon the sky is as dark as your site allows. Emission nebulae can still be imaged near full moon with narrowband or dual-band filters, which block most of the moonlight.

How these dates are calculated

Phase times come from astronomy-engine. Every phase from 2026 to 2028 was checked against the US Naval Observatory: the largest difference is 1.3 minutes, and the average is under a minute. Dark week dates use the moon's illuminated fraction at 00:00 UTC. A new moon late in the day in UTC can fall on the next calendar date in time zones east of Greenwich, and on the previous date well to the west.