This last weekend I was looking ahead at the interesting celestial highlights for the coming months in the 2000 Old Farmer's Almanac. As for the moon (March through May), it is at perigee on March 14th, April 8th, and May 6th. It is apogee on March 27th, April 24th, and May 22nd. Also here is what it says about the grouping of planets in May:

Every naked-eye planet now lies behind the Sun in an invisible grouping confined within a mere 26-degree diameter. (On the night of the 3rd-4th, even the New Moon invisibly lines up with this compact cluster). The physical influence of such an assembly is miniscule. Thanks to the long distances and small masses of the planets, the tidal increase in Earth's oceans is less than 1/300 (one three hundredth) inch. On the 17th, the five-planet conference attains its minimal diameter: 19 degrees. By month's end, Jupiter passes close to Saturn in the rarest of the naked-eye conjunctions (occuring once every 20 years), but this event is obscured by morning twilight. On the 28th, Mercury stands low in the west shortly after sunset.

The New Moon in May is early on the 4th for the east coast and late on the 3rd for everyplace west of there, and the Full Moon is early on the 18th.

I hope this helps,
Steven T, Tarzana, CA