January

<p>January is the first month of the year in the <a href="/facts/Julian_calendar/EQBtA1ML">Julian</a> and <a href="/facts/Gregorian_calendar/axJfTXV1">Gregorian calendars</a>. Its length is 31 days. The first day of the month is known as <a href="/facts/New_Year%2527s_Day/6XQyYPCn">New Year's Day</a>. It is, on average, the coldest month of the year within most of the <a href="/facts/Northern_Hemisphere/EFwyqL25">Northern Hemisphere</a> (where it is the second month of winter) and the warmest month of the year within most of the <a href="/facts/Southern_Hemisphere/QfJ4z9L5">Southern Hemisphere</a> (where it is the second month of summer). In the Southern hemisphere, January is the seasonal equivalent of <a href="/facts/July/stjxXWw2">July</a> in the Northern hemisphere and vice versa.
</p><p><a href="/facts/Ancient_Roman/cGqIuxPd">Ancient Roman</a> observances during this month include <a href="/facts/Cervula/mSjWp713">Cervula</a> and Juvenalia, celebrated January 1, as well as one of three <a href="/facts/Agonalia/9Nad0qQe">Agonalia</a>, celebrated January 9, and <a href="/facts/Carmentalia/11lVQBKB">Carmentalia</a>, celebrated January 11. These dates do not correspond to the modern Gregorian calendar.
</p>

January open-in-new

January