If there's one thing about latin that really annoys me, it has to be the way Romans named dates; instead of saying "January 2nd" they had to be crazy and say "5 days before the Nones of Ianuarius" - quite a mouthfull if you ask me:

Latin Months

Ianuarius, -a, -um	Iulius, -a, -um
Februarius, -a, -um	Augustus, -a, -um
Martius, -a, -um	September, Septembris, Septembre
Aprilis, -is, -e	October, Octobris, Octobre
Maius, -a, -um	November, Novembris, Novembre
Iunius, -a, -um	December, Decembris, Decembre

Latin Dates (of the months)

Latin Name	Day of Month	Alternate Date*
Kalends	1st	none
Nones	5th	7th
Ides	13th	15th

*In March May July, and October, these dates change

To form a date: Count back from that date (e.g. "Kalends"), including the day you are starting on; examples: "November 2:" "4 days before Nones"; "April 30:" "pridie Kalendas Maias" ("on the day before May 1); etc.