bissextus

bissextus noun [bahy-seks-tuh s]

1. February 29th: the extra day added to the Julian calendar every fourth year (except those evenly divisible by 400) to compensate for the approximately six hours a year by which the common year of 365 days falls short of the solar year.

The Wrong Way to Offload a Train

Mr. Methane

Family?

One of these doesn't fit with the others.

Synopsis: A world traveling ghost hunter mysteriously disappears leaving everything to his niece; who accidentally releases a horde of angry spirits, imprisoned in liquor bottles, during her Fourth of July party

Distiller on IMDb.

Not my cuppa, but you might like it.  Not sure it's family fare, though.

It's got booze in it, after all.