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

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At 17:50:50 UT Saturday 11 August 2018

the moon’s phase will be

**Universal Time**
is 17.8638888888889 in decimal hours.

The **Julian date** will be 2458341.50173271.

The **sun’s ecliptic longitude** will be 138.989036401924 degrees.

Its **mean anomaly** will be 217.3834008591 degrees.

The moon’s **true longitude** will be 4823.76031911991 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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