Original sentence: 1 History.2 Holidays in January.3 January symbols.4 References.Contents [hide].It is, on average, the coldest month of the year within most of the Northern Hemisphere and the warmest month of the year within most of the Southern Hemisphere.January  (pronunciation) (help·info) i the first month of the year in the Julian and Gregorian calendars, and one of seven Gregorian months with the length of 31 days.January  i the first month of the year in the Julian and Gregorian calendars, and one of seven Gregorian months with the length of 31 days.The first day of the month is known as New Year's Day.Various Christian feast dates were use for the New Year in Europe during the Middle Ages, including March 25 and December 25
Edited sentence: January  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.Various Christian feast dates were used for the New Year in Europe during the Middle Ages, including March 25 and December 25