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1.
A annual holiday falling on March 10th. Originally started to celebrate the birthday of THE Chuck Norris, Epic Day involves listening to epic songs and watching epic movies (no, not Epic Movie). Epic Day was started on March 10th, 2008 by two epicly cool cats from Bensalem, PA.
The Epic Day Soundtrack mainly consists of...Lux Aeterna (LotR version) and O Fortuna.
by Bo Chen March 10, 2008
 
2.
Metalheads epic day that started on july 25, 2007. A holiday dedicated to all metal heads to party and listen to the best tunes of metal
"Epic Day"
by metall666 July 17, 2009