Moon Phase Calculator

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Observer Desired Local Time - Valid year range is 2000 - 2036
Year: Month: Day: Time Zone:
Today is Tue, Jun 18, 2019 the moon is 16 days old, 97% illuminated and decreasing.
PhaseLunation 240Lunation 241Lunation 242
New Moon Mon, Jun 3, 2019 5:03 AMTue, Jul 2, 2019 2:17 PMWed, Jul 31, 2019 10:12 PM
Waxing Crescent Moon Thu, Jun 6, 2019 3:01 PMFri, Jul 5, 2019 10:06 PMSun, Aug 4, 2019 5:22 AM
First Quarter Moon Mon, Jun 10, 2019 1:00 AMTue, Jul 9, 2019 5:55 AMWed, Aug 7, 2019 12:32 PM
Waxing Gibbous Moon Thu, Jun 13, 2019 2:16 PMFri, Jul 12, 2019 11:17 PMSun, Aug 11, 2019 10:01 AM
Full Moon Mon, Jun 17, 2019 3:31 AMTue, Jul 16, 2019 4:39 PMThu, Aug 15, 2019 7:30 AM
Waning Gibbous Moon Fri, Jun 21, 2019 4:09 AMSat, Jul 20, 2019 6:29 PMMon, Aug 19, 2019 8:43 AM
Third Quarter Moon Tue, Jun 25, 2019 4:47 AMWed, Jul 24, 2019 8:19 PMFri, Aug 23, 2019 9:57 AM
Waning Crescent Moon Fri, Jun 28, 2019 9:32 PMSun, Jul 28, 2019 9:16 AMMon, Aug 26, 2019 4:58 AM


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).