Big year (disambiguation)

Big year stands for:

• Great year , time span after which the planets are in their original arrangement, see world cycle
• The great year , precession period from around 25,700 to 25,800 years, see cycle of precession
• Big year , leap year, which included 13 lunar months, see lunar calendar (Ancient Egypt) # Leap cycle and leap years
• Great year , time span in which Sirius once goes through the ancient Egyptian calendar, see Sothis cycle #The exploration of the Sothis cycle in antiquity

This is a disambiguation page for differentiating between several terms identified with the same word.