Moon Phase Calculator

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Observer Desired Local Time - Valid year range is 2000 - 2036
Year: Month: Day: Time Zone:
Today is Mon, Jun 18, 2018 the moon is 5 days old, 28% illuminated and increasing.
PhaseLunation 228Lunation 229Lunation 230
New Moon Wed, Jun 13, 2018 2:44 PMThu, Jul 12, 2018 9:49 PMSat, Aug 11, 2018 4:58 AM
Waxing Crescent Moon Sat, Jun 16, 2018 10:18 PMMon, Jul 16, 2018 6:21 AMTue, Aug 14, 2018 3:54 PM
First Quarter Moon Wed, Jun 20, 2018 5:52 AMThu, Jul 19, 2018 2:53 PMSat, Aug 18, 2018 2:49 AM
Waxing Gibbous Moon Sun, Jun 24, 2018 2:53 AMMon, Jul 23, 2018 3:07 PMWed, Aug 22, 2018 4:53 AM
Full Moon Wed, Jun 27, 2018 11:54 PMFri, Jul 27, 2018 3:21 PMSun, Aug 26, 2018 6:57 AM
Waning Gibbous Moon Mon, Jul 2, 2018 1:23 AMTue, Jul 31, 2018 2:20 PMThu, Aug 30, 2018 2:17 AM
Third Quarter Moon Fri, Jul 6, 2018 2:51 AMSat, Aug 4, 2018 1:19 PMSun, Sep 2, 2018 9:38 PM
Waning Crescent Moon Mon, Jul 9, 2018 12:20 PMTue, Aug 7, 2018 9:08 PMWed, Sep 5, 2018 10:49 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).