>>42469456
Not particularly. In It Isn't the Mane Thing About You, Pinkie Pie celebrates the Baby Cakes' sneeze-iversary: The first anniversary of the first time the Baby Cakes sneezed. Baby Cakes were introduced in Season 2, the other episode is in Season 7. So, only about a year passed between Season 2 and 7. Thus, almost no aging. Thus, the ponies celebrate Hearth's Warming Eve multiple times a year etc.