Moon Phase Calculator

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Observer Desired Local Time - Valid year range is 2000 - 2036
Year: Month: Day: Time Zone:
Today is Fri, May 29, 2020 the moon is 7 days old, 45% illuminated and increasing.
PhaseLunation 252Lunation 253Lunation 254
New Moon Fri, May 22, 2020 12:39 PMSun, Jun 21, 2020 1:42 AMMon, Jul 20, 2020 12:33 PM
Waxing Crescent Moon Tue, May 26, 2020 5:35 AMWed, Jun 24, 2020 2:29 PMThu, Jul 23, 2020 10:03 PM
First Quarter Moon Fri, May 29, 2020 10:30 PMSun, Jun 28, 2020 3:16 AMMon, Jul 27, 2020 7:33 AM
Waxing Gibbous Moon Tue, Jun 2, 2020 6:22 AMWed, Jul 1, 2020 1:31 PMThu, Jul 30, 2020 9:16 PM
Full Moon Fri, Jun 5, 2020 2:13 PMSat, Jul 4, 2020 11:45 PMMon, Aug 3, 2020 10:59 AM
Waning Gibbous Moon Tue, Jun 9, 2020 7:49 AMWed, Jul 8, 2020 9:07 PMFri, Aug 7, 2020 11:22 AM
Third Quarter Moon Sat, Jun 13, 2020 1:24 AMSun, Jul 12, 2020 6:30 PMTue, Aug 11, 2020 11:45 AM
Waning Crescent Moon Wed, Jun 17, 2020 1:33 AMThu, Jul 16, 2020 3:32 PMFri, Aug 14, 2020 5:52 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).