Moon Phase Calculator

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Observer Desired Local Time - Valid year range is 2000 - 2036
Year: Month: Day: Time Zone:
Today is Sat, Apr 4, 2020 the moon is 11 days old, 86% illuminated and increasing.
PhaseLunation 250Lunation 251Lunation 252
New Moon Tue, Mar 24, 2020 4:29 AMWed, Apr 22, 2020 9:26 PMFri, May 22, 2020 12:39 PM
Waxing Crescent Moon Sat, Mar 28, 2020 4:55 AMSun, Apr 26, 2020 6:33 PMTue, May 26, 2020 5:35 AM
First Quarter Moon Wed, Apr 1, 2020 5:22 AMThu, Apr 30, 2020 3:39 PMFri, May 29, 2020 10:30 PM
Waxing Gibbous Moon Sat, Apr 4, 2020 1:29 PMSun, May 3, 2020 10:42 PMTue, Jun 2, 2020 6:22 AM
Full Moon Tue, Apr 7, 2020 9:36 PMThu, May 7, 2020 5:46 AMFri, Jun 5, 2020 2:13 PM
Waning Gibbous Moon Sat, Apr 11, 2020 7:46 AMSun, May 10, 2020 7:25 PMTue, Jun 9, 2020 7:49 AM
Third Quarter Moon Tue, Apr 14, 2020 5:57 PMThu, May 14, 2020 9:03 AMSat, Jun 13, 2020 1:24 AM
Waning Crescent Moon Sat, Apr 18, 2020 7:42 PMMon, May 18, 2020 10:51 AMTue, Jun 16, 2020 12:42 PM


Notes:
1. Use the Home link to return to the home page. Do not use the back button.
2. If more precise information is needed NASA has exact eclipse and moon phase data worked out for the entire century.
3. Time Zone is the number of hours the local time zone is offset from UTC(GMT), negative to the west and positive to the east.
Standard times are EST=-5, CST=-6, MST=-7 and PST=-8.
Daylight times are EDT=-4, CDT=-5, MDT=-6 and PDT=-7.
4. Lunation count starts with the first new moon in 2000 (1/6/2000) equals zero. Brown's Lunation Number is 953 greater.
5. Based on an algorithm developed by Jean Meeus (Astronomical Algorithms 1998).