Per Jon Carroll in today's SF Chronicle:
"And I'm not that crazy about Valentine's Day. I know it's a bogus invented holiday, but that doesn't bother me so much - every holiday is bogus and invented, one way or another. The arcane solar/lunar formula for determining Easter is just as artificial. Not everybody signed the Declaration of Independence on July 4. Some patriots said, "You know, I'm going to have my people kick this around, and I'll get back to you." Only they said it with all their s's looking like f's."