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1 April, 17:54 Mercury at inferior conjunction
8 April, 05:31 Moon at apogee
16 April, 01:57 New moon
18 April Uranus at conjunction
20 April, 14:33 Moon at perigee
22 April, 20:00 Lyrids peak
29 April, 18:24 Mercury at greatest western elongation
30 April, 00:58 Full moon
source: http://en.wikipedia.org/wiki/Portal:Astronomy/Events/April_2018