Welcome to Bleach Answers. What would you like to know?

It is currently unknown what the dates refer to. However, it is highly unlikely to be due to the day they were born on earth, as the Espada were Menos Grande before they became Arrancar. And Menos are composed of (at least) hundreds of individual Hollows merged together - thus no one single birth date.

Ad blocker interference detected!

Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers

Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.