But the two holidays have different origins. In Iran, Teacher's Day commemorates the assassination of Ayatollah Murtaza Motahhari, a key follower of Ayatollah Khomeini's at the time of the 1979 Revolution. He was Chairman of the Council of Revolution of Iran at the time of his murder.
In the Himalayan nation of Bhutan, Teacher's Day is observed on May 2 to honor the Third King, Jigme Dorji Wangchuck, who established a number of schools in that nation.
If you're out carousing tonight with a teacher or two and you want to look really smart, ask if they know of anyone who died today (besides Osama bin Laden)?
I'll give you three -- you can look up any others on your own:
Leonardo da Vinci
Former Wisc. Sen. Joe McCarthy
Former FBI Director J. Edgar Hoover
Of course, this close to Loyalty Day, you may want to be careful what you say about either McCarthy or Hoover....
If you're planning ahead, World Teachers' Day is October 5.