Moon Phase Calculator

Use the Home link to return to the home page. Do not use the back button.
Observer Desired Local Time - Valid year range is 2000 - 2036
Year: Month: Day: Time Zone:
Today is Mon, Feb 18, 2019 the moon is 14 days old, 98% illuminated and increasing.
PhaseLunation 236Lunation 237Lunation 238
New Moon Mon, Feb 4, 2019 4:04 PMWed, Mar 6, 2019 11:05 AMFri, Apr 5, 2019 3:51 AM
Waxing Crescent Moon Fri, Feb 8, 2019 4:45 PMSun, Mar 10, 2019 8:16 AMMon, Apr 8, 2019 8:59 PM
First Quarter Moon Tue, Feb 12, 2019 5:27 PMThu, Mar 14, 2019 5:28 AMFri, Apr 12, 2019 2:06 PM
Waxing Gibbous Moon Sat, Feb 16, 2019 2:10 AMSun, Mar 17, 2019 1:06 PMMon, Apr 15, 2019 10:10 PM
Full Moon Tue, Feb 19, 2019 10:54 AMWed, Mar 20, 2019 8:43 PMFri, Apr 19, 2019 6:13 AM
Waning Gibbous Moon Fri, Feb 22, 2019 8:41 PMSun, Mar 24, 2019 9:57 AMMon, Apr 22, 2019 11:46 PM
Third Quarter Moon Tue, Feb 26, 2019 6:28 AMWed, Mar 27, 2019 11:10 PMFri, Apr 26, 2019 5:19 PM
Waning Crescent Moon Sat, Mar 2, 2019 8:47 AMMon, Apr 1, 2019 1:31 AMTue, Apr 30, 2019 8:39 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).