I first read this poem on Malcolm Guite’s blog – he included it in his anthology

Tonight I was driving home from a meeting — the skies were clear midnight blue for the first time in ten days, just in time for me to get a view as long as my journey, of the “silvercoin full” moon hanging there. I wished that I could turn on my jets and angle straight up to talk to the Man who was smiling at me. I remembered the poem, and without thinking whether it made any sense, I said, “Mr. Glad, will you look at this moon!”
You might want to read on the poet’s own website, Grevel Lindop, from which he also links to Malcolm Guite’s presentation. Both of them feature evocative images to accompany the poem.
THE MOONS
Too many moons to fill an almanac:
the half, the quarters, and the slices between
black new and silvercoin full –
pearl tossed and netted in webs of cloud,
thread of light with the dull disc in its loop,
gold shaving afloat on the horizon of harvest –
How many times did you call me from the house,
or from my desk to the window, just to see?
Should I string them all on a necklace for you?
Impossible, though you gave them all to me.
Still some of their light reflects from memory.
Here it is, distant gleam on the page of a book.
-Grevel Lindop