Merry . . .

Can you guess why Shel Silverstein set him poem on this date?

MERRY...

No one’s hangin’ stockin’s up,
No one’s bakin’ pie,
No one’s lookin’ up to see
A new star in the sky.
No one’s talkin’ brotherhood,
No one’s givin’ gifts,
And no one loves a Chritsmas tree
On March the twenty-fifth.