Yesterday was Sunday; it was also Mother’s Day in the U.S. — except for one Yahoo! Travel writer, who will be celebrating Mother’s Day tomorrow, the second Tuesday in May:
Where the heck did that writer get that information? Mother’s Day is the second Sunday in May and has been the second Sunday in May for at least 100 years.
Terribly Write 
May 12, 2014 at 4:23 pm
Not only that, but it wan’t Congress – it was President Wilson, in 1914, with a proclamation.