Review of Peace on Earth by William Carlos Williams

Peace on Earth by William Carlos Williams was offered by Poets.org's Poem-A-Day on December 25, 2012.  It is a rhyming poem with a refrain that repeats certain lines, perhaps in accordance with a standard poetic form.  I enjoyed the playful use of constellations throughout.  Its title implies a Christmas theme, but I do not believe that it is meant to be a holiday poem.