Geeky Holidays Party excuses for the geek in everyone.

Geek events to celebrate on January 7:

1610 – Galileo Galilei observes the four largest moons of Jupiter for the first time. He named them and in turn the four are called the Galilean moons.

January 7 birthdays of geeky note:

1502 – Pope Gregory XIII (d. 1585). The Gregorian calendar is named after him because he reformed date-keeping to more accurate astronomical standards… and that’s the standard civil calendar that we use today!