To look up the phase of the moon for any (Common Era) date,
just fill out the form below, then hit “Find Phase.”
At 23:12:32 UT Sunday 14 December 2025
the moon’s phase is
Universal Time
is 23.2255555555556 in decimal hours.
The Julian date is 2461023.71789081.
The sun’s ecliptic longitude is 263.258182850293 degrees.
Its mean anomaly is 341.1098070453 degrees.
The moon’s mean longitude on 00 January 1990 was 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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