To look up the phase of the moon for any date,

just fill out the form below, then hit "Find Phase."

At 10:35:31 UT Monday 21 January 2019

the moon’s phase will be

**Universal Time**
is 10.6086111111111 in decimal hours.

The **Julian date** will be 2458505.4992508.

The **sun’s ecliptic longitude** will be 301.098115375679 degrees.

Its **mean anomaly** will be 17.7459555601 degrees.

The moon’s **mean longitude** will be 318.351648 degrees.

*These calculations incorporate the switch to the English New Style (N.S.)—i.e., Gregorian— calendar after Wednesday, 02 September 1752; the next day became Thursday, 14 September, skipping eleven days. (Please also note that, while fairly accurate, these calculations remain a bit buggy.)*

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