Since Gnomes have their Gnomekindle and the Saris have their Banner Days to celebrate the Winter, what do Dragons on Hoardmas?

It was mentioned several times, "Merry Hoardmas" things to buy in the item shop even St. Drulkar.

So is there any Hoardmas lore? Do dragons actually celebrate Hoardmas? What they do on Hoardmas then? Brings Drulkar good Dragons hoard at hoardmas, and he steals the hoard from bad ones? Or give Dragon parents their hatchling hoard at hoardmas?