Founder's Day

The annual Founder's Day is a holiday in the Vault 101 calendar. This holiday commemorates the Overseer who first governed and founded this Vault.

In the mid-23rd century, Beatrice Armstrong re-uses one of her old poems to celebrate Founder's Day when she couldn't find a word that rhymes with Overseer.

Note
Founder's Day is very similar to President's Day (US).