Mercury makes its closest approach to the Earth (0.568 AU) at 08:35 UT, 23rd April 2017
Mercury is at perihelion at 09:35 UT, 23rd April 2017
The waning crescent Moon is near Neptune at 20:11 UT, 22nd April 2017.
(Occulted for some observers)
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Maximum westerly lunar libration is at 00:45 UT, 22nd April 2017.
(Look towards Grimaldi crater)
Mars is ~3.6° south of the Pleiades star cluster at 11:00 UT, 20th April 2017.
Pluto is stationary, assuming retrograde motion, at 09:00 UT, 20th April 2017.
Mercury is at Inferior conjunction (separation 1.6° from the Sun) at ~05:50 UT, 20th April 2017
Last Quarter Moon is at 09:57 UT, 19th April 2017
Maximum southerly lunar declination (-19.096°) is at 13:16 UT, 17th April 2017
The Moon is 3.0° north of Saturn at ~17:50 UT, 16th April 2017
Lunar apogee is at 09:57 UT, 15th April 2017