New moon dates 1991
- 1991: 12 × new moon — 16 January 1991, 14 February 1991, 16 March 1991, 14 April 1991, 14 May 1991, 12 June 1991, 11 July 1991, 10 August 1991, 8 September 1991, 7 October 1991, 6 November 1991, 6 December 1991.
New moon dates 1991
| Date | Time (UTC) | |
|---|---|---|
| Wed 16 Jan | 23:49 | passed |
| Thu 14 Feb | 17:31 | passed |
| Sat 16 Mar | 08:10 | passed |
| Sun 14 Apr | 19:37 | passed |
| Tue 14 May | 04:35 | passed |
| Wed 12 Jun | 12:05 | passed |
| Thu 11 Jul | 19:05 | passed |
| Sat 10 Aug | 02:27 | passed |
| Sun 8 Sep | 11:00 | passed |
| Mon 7 Oct | 21:38 | passed |
| Wed 6 Nov | 11:10 | passed |
| Fri 6 Dec | 03:56 | passed |
Questions people ask
What is a moon day?
A moon day counts the days since the last new moon: the first moon day starts at the new moon, the fifteenth around the full moon. The count on this page is the whole number of days since the last new moon plus one.
Is the moon waxing or waning?
Waxing means the lit part is growing (from new moon to full moon); waning means it is shrinking (from full moon to new moon). In the northern hemisphere a waxing moon is lit on the right.
How are the phase times calculated?
With the algorithms published by Jean Meeus in Astronomical Algorithms (1998), including the periodic terms, which give the phase instants to about one minute.