Dr. Martin Luther King, Jr. Day or Robert E. Lee’s Birthday: Google Lists Holiday Differently for Southern States

You may notice something strange when you search for your favorite business' hours today. Google lists today's holiday differently for states in the South. 

I had to go to the dentist this weekend, and I searched the hours for Black Warrior Dental here in town. I noticed that today's holiday--Dr. Martin Luther King, Jr. Day--wasn't listed as such--it was listed as Robert E. Lee's birthday.

I thought this was a little weird, so I posted a screenshot to Facebook. I thought it may have been an error on Google's part, but when my friends chimed in, I realized the holiday was listed differently based on location. Take a look at the business hours for a Michigan Bakery.

Strange, right? Here's a business in Austin, Texas.

I checked the State of Alabama's list of Official Holidays, and Robert E. Lee's Birthday is listed as today. Robert E. Lee's birthday is observed in Alabama, Arkansas, and Mississippi. I wonder why Google lists the local holiday over the federal holiday... this is definitely a head-scratcher!

Anyone know why Google wouldn't list today as Dr. Martin Luther King, Jr. Day? Hit me up in the comments if you know why!