The Kalachakra (Sanskrit कालचक्र Kālacakra, Tibetan: དུས་ཀྱི་འཁོར་ལོ།, is a term used in Vajrayana Buddhism that means wheel of time or "time-cycles".
"Kālacakra" is one of many tantric teachings and esoteric practices in Tibetan Buddhism. It is an active Vajrayana tradition, and has been offered to large public audiences. The tradition combines myth and history, whereby actual historical events become an allegory for the spiritual drama within a person, drawing symbolic / allegorical lessons for inner transformation towards realizing Buddha Nature.