What about "minor" holidays?

On Armistice Day the Philharmonic will play
But the songs that they sing will be sad
(Paul Simon)

Hurry take me to the Mardi Gras
In the city of my dreams
You can legalize your lows
You can wear your summer clothes
Into New Orleans
(Paul Simon, again)

Specific dates in history, courtesy of Al Stewart:

Europe lies sleeping with no heartbeats through the floor
On the last day of June, 1934.

For tonight is New Year's Eve
Uncork your spirits and welcome it in
Who knows what it's got up its sleeve?
Can't wait for it all to begin
...And we're laughing, laughing into 1939.

Alex