January 2003
- New moonThu 2 Jan, 20:23
- First quarterFri 10 Jan, 13:15
- Full moonSat 18 Jan, 10:48
- Last quarterSat 25 Jan, 08:33
Lunar calendar
Moon phases 2003
The lunar calendar for 2003: 13 new moons and 12 full moons, month by month, with a calendar of the Moon’s phase on each day that you can print.
Moon phases 2003 · times in UTC
February 2003
- New moonSat 1 Feb, 10:48
- First quarterSun 9 Feb, 11:11
- Full moonSun 16 Feb, 23:51
- Last quarterSun 23 Feb, 16:46
March 2003
- New moonMon 3 Mar, 02:35
- First quarterTue 11 Mar, 07:15
- Full moonTue 18 Mar, 10:34
- Last quarterTue 25 Mar, 01:51
April 2003
- New moonTue 1 Apr, 19:19
- First quarterWed 9 Apr, 23:40
- Full moonWed 16 Apr, 19:35
- Last quarterWed 23 Apr, 12:18
May 2003
- New moonThu 1 May, 12:15
- First quarterFri 9 May, 11:53
- Full moonFri 16 May, 03:36
- Last quarterFri 23 May, 00:31
- New moonSat 31 May, 04:20
June 2003
- First quarterSat 7 Jun, 20:27
- Full moonSat 14 Jun, 11:16
- Last quarterSat 21 Jun, 14:45
- New moonSun 29 Jun, 18:38
July 2003
- First quarterMon 7 Jul, 02:32
- Full moonSun 13 Jul, 19:21
- Last quarterMon 21 Jul, 07:01
- New moonTue 29 Jul, 06:53
August 2003
- First quarterTue 5 Aug, 07:28
- Full moonTue 12 Aug, 04:48
- Last quarterWed 20 Aug, 00:48
- New moonWed 27 Aug, 17:26
September 2003
- First quarterWed 3 Sept, 12:34
- Full moonWed 10 Sept, 16:36
- Last quarterThu 18 Sept, 19:03
- New moonFri 26 Sept, 03:09
October 2003
- First quarterThu 2 Oct, 19:09
- Full moonFri 10 Oct, 07:27
- Last quarterSat 18 Oct, 12:31
- New moonSat 25 Oct, 12:50
November 2003
- First quarterSat 1 Nov, 04:25
- Full moonSun 9 Nov, 01:13
- Last quarterMon 17 Nov, 04:15
- New moonSun 23 Nov, 22:59
- First quarterSun 30 Nov, 17:16
December 2003
- Full moonMon 8 Dec, 20:37
- Last quarterTue 16 Dec, 17:42
- New moonTue 23 Dec, 09:43
- First quarterTue 30 Dec, 10:03
Where you are
Moonrise and moonset in your city
The phase is the same everywhere; moonrise and moonset are not. Open the sun and moon page of your city for today’s times and a month of phases.
/
- Type a city, a country or a zone such as “CET” or “Tokyo”.
How it works
The four principal phases
The Moon passes through four principal phases in about 29.5 days: new moon (Moon between Earth and Sun, unlit side towards us), first quarter (half the disc lit, on the right seen from the northern hemisphere), full moon (the whole disc lit) and last quarter (half lit, on the left). The days in between are crescent and gibbous, waxing before full moon and waning after it.
A lunar cycle lasts 29.53 days on average, but individual cycles range from about 29.3 to 29.8 days, so a year holds 12 or 13 of each principal phase, and the days between the four phases are not always the same.
Dates depend on the time zone
Each principal phase is one instant, the same everywhere. The calendar date of that instant depends on the time zone: a new moon at 23:30 UTC is already the next day in Asia and Australia. Use the switch above the calendar to read the dates in UTC or in your own zone; the grids and the lists change together.
The phase drawn for an ordinary day is the Moon at noon, so it is the same for everyone in that time zone. Illuminated percentages are the true lit fraction of the disc.
How we compute it
The principal phases are from Jean Meeus’s Astronomical Algorithms (chapter 49) and agree with the US Naval Observatory’s tables to the minute (checked for 2026 and 2027). The illuminated fraction comes from the Moon’s and Sun’s true positions. The calculation assumes a constant difference between Earth time and UTC and is good for 2000–2050.
Questions
Good to know
What are the moon phases in 2003?
There are 13 new moons, 13 first quarters, 12 full moons and 12 last quarters in 2003. The first new moon is on Thursday, 2 January 2003, the first full moon on Saturday, 18 January 2003 (dates in UTC).
How long is the lunar cycle?
The Moon takes 29.53 days on average to go from one new moon to the next, and individual cycles range from about 29.3 to 29.8 days.
Why does the date of a moon phase differ from another calendar?
A principal phase is a single instant, and the date depends on the time zone. Switch the calendar to your own time zone to read the phases in local time.
Can I print the moon phase calendar?
Yes. Use “Print this calendar”: the page prints on white paper in light ink, six months to a page, with the principal phases marked.
Is the Moon’s phase the same everywhere?
Yes, the same fraction of the disc is lit at the same moment everywhere on Earth. Only the date, and how the Moon looks (upside down in the south), differ.