Jan n. : One of intermediate order between angels and men.

Example:
What is there to do in Montreal and Quebec City from Jan 31 through Feb 7, 2010?

Taxonomy
January 1, free encyclopedia, Search, month of the year, floral emblem, Articles with unsourced statements, first month, History, designation, northern England, Roman calendar, Scotland, ogg, Gregorian calendars, first day, day of the month, the Northern Hemisphere, Southern Hemisphere.

Defination from the web:
January (pronunciation) (help·info) is the first month of the year in the Julian and Gregorian calendars, and one of seven Gregorian months with the length of 31 days. ... two consuls, who entered office on May 1 and March 15 before 153 BC when they began to enter office on January 1. ...