Don't you maniacs own a CALENDAR?
The Big Bang Theory Season 10, Episode 12
December 25th, 1642, Julian CALENDAR,
Sir Isaac Newton is born.
The Big Bang Theory Season 3, Episode 11
Okay, put it on my CALENDAR, but start
thinking of a reason why I can't go.
The Big Bang Theory Season 2, Episode 4
Really? You're changing
the Sheldonian CALENDAR?
The Big Bang Theory Season 4, Episode 2
Sara, pull up my CALENDAR.
The Big Bang Theory Season 10, Episode 22