January:
- 1st- New Year's Day
- 16th- Founding Day
February:
- 12th- International Darwin Day
- 16th- Innovation Day
- 4th Thursday of February- Chilly Day
March:
- 14th- Pi Day
April:
- 3rd- Kamen Rider Day
May:
- 25th- Adult Film Appreciation Day
June:
- 6th- Atheist Pride Day
July:
- 13th Baron's Day
August:
- 25th- Linux Day
September:
- 8th Star Trek Day
October:
- 31st- Halloween
November:
- 2nd Sunday of November- Appreciation Day
December:
- 17th- Saturnalia
- 31st- New Year's Eve