Adar (Hebrew:אֲדָר‎, Standard Adar Tiberian ʾĂḏār ; from Akkadian adaru) is the sixth month of the civil year and the twelfth month of the ecclesiastical year on the Hebrew calendar. It is a winter month of 29 days. In leap years, it is preceded by a 30-day intercalary month named Adar Aleph (Aleph being the first letter of the Hebrew alphabet), Adar Rishon (First Adar) or Adar I and it is then itself called Adar Bet (Bet being the second letter of the Hebrew Alphabet), Adar Sheni (Second Adar) or Adar II. Occasionally instead of Adar I and Adar II, "Adar" and "Ve'Adar" are used (Ve means 'and' thus: And Adar). Adar I and II occur during February–March on the Gregorian calendar.