The actor, 40, announced Friday during comic Doug Benson's podcast, Doug Loves Movies, that the AMC drama would return on March 25. The network could not confirm the airdate.
But the date makes sense since it is a Sunday (Mad Men's longtime home) and comes a week after The Walking Dead's season finale. Mad Men hasn't aired new episodes since October 2010, due in part to lengthy negotiations for Seasons 5 and 6 between series creator Matthew Weiner and AMC.
Hamm, who won a Golden Globe award for his performance in 2008, directed the Season 5 premiere.
Are you ready for Mad Men's return?