Holiday Dragon Breeding Past holiday dragons will be breedable for a seven day period from December 19 at 00:00 EST to December 25 at 23:59 EST. During this time, past holiday dragons will be able to produce eggs of their breed, and have the potential for breeding multiple eggs (though you will only be able to keep one per pairing). This is unchanged from previous years. The special Holiday biome will again be available during the same time period (December 19 at 00:00 EST to December