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The waxing moon.

At 18:44:59 UT Wednesday 29 March 2017
the waxing moon’s phase is

3.87% full

Time Zone:   

Some factors that go into this equation:

Universal Time is 18.7663888888889 in decimal hours.
The Julian date is 2457841.53870283.
The sun’s ecliptic longitude is 9.27186811874299 degrees.
Its mean anomaly is 84.59678711323 degrees.
The moon’s true longitude is 31.9635141576373 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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