Cyclic day of Brahma in Hindu cosmology lasting 1,000 Yuga Cycles containing 14 Manvantaras and 15 Sandhyās. It is followed by a night (pralaya) of equal length, forming one 24-hour day of Brahma's 100 360-day years.
A kalpa is a long period of time (aeon) in Hindu and Buddhist cosmology, generally between the creation and recreation of a world or universe.
Etymology
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).