Complaint-line question: why Easter and Passover use different calendars

• Why doesn't Easter follow the same calendar as Passover (lunar versus Gregorian)?
• What does the word "orthodox" mean?
• Why does the calendar show Easter Monday?

The hosts read Cody's Dear LFTP-style complaint-line letter: why doesn't Easter follow the same calendar as Passover, lunar versus Gregorian? The answer: two different peoples with two different calendars — the Jews set the Passover calendar around their own seasons with no interest in Easter dating, and the early church tied Easter to the equinox — so "mommy and daddy got divorced, and they keep different calendars," which is why Easter can even land before Passover some years. Tangents include Easter Monday (a Catholic/Greek Orthodox thing, admittedly not fully understood), a word study on "orthodox" — from Greek orthos (straight, right) and doxa (opinion), "pretty much means I'm of the right opinion" — and the Thursday-versus-Friday crucifixion debate, where a host describes his nerd-style spreadsheet reconciling the three days via Jewish day reckoning (Friday at 3 p.m. counts as Friday, dawn Sunday the third day). Ben is addressed on-air during the exchange.