Rambo Day is a very special day of the year when men congregate together and celebrate their manliness by watching a marathon of
Rambo films. It is sometimes confused with the inferior holiday "Valentine’s Day", which, coincidently, happens to fall on the same
date.
However, the general awesomeness that is
Rambo Day is so omnipresent that Valentine’s Day can be analogized as a candle vis-à-vis Rambo Day’s equatorial afternoon midsummer’s day sun (or, alternatively, a supernova).
In other words, Rambo Day is the Chick Norris of holidays.