It seems the aztec calendar had unique days-- I fox, 2 wolf, 3 deer-- which repeated once every 52 years! so in effect your the day of your birth also named the year of your birth!

AMAZING!! If I read that correctly, and if the calendar in question was the 260 day one, that means they had 13,520 uniquely named days. I wonder how many objects in the Aztec universe were not used, if they managed to come up with so many. Of course, if they used stars, that might help - I was born on star 5,000, my daughter on star 12,500 I challenge anyone here to come up with a list of 13,520 unique objects for use in naming anything. Naturally, as Aztec civilisation had not been introduced to Gutenberg, your lists must be from mental recall only.