Chronometry

Description of time from Atom to the life of Lord Brahma

Paramanu (Atom) -->Ultimate indivisible particle of material manifestation

Param Mahan -->Unmanifest aggregate of Atoms (Complete Manifestation)

Atomic Time -->Time required for the sun to pass an Atom or time taken to pierce a lotus through a needle

Greater Time (Brahma's life) -->Time required to cover the unmanifest aggregate of Atoms

Trasarenu --> Two paramaanus make an anu. Three anus make a trasarenu, which is perceived by the eye, since if follow the air currents in the rays of the sun entering the window lattice.

One Truti --> The time it takes for the sun to pass over three trasa-renus (3 hexatomes) = 8/13,500 sec

Cosmic Time	Divisions of Time	Human Time
1 truti	Time to the integration of 3 trasarenus (hexatoms)	8/13500 sec (1/1687.5 sec)
1 vedha	100 trutis	8/135 sec
1 lava	3 vedhas	8/45
1 nimesa	3 lavas	8/15 sec
1 ksana	3 nimesas	8/5 sec
1 kaasthaa	5 ksanas	8 sec
1 laghu	15 kaasthaas	2 min or 120 sec
1 naadikaa or danda	15 laghus	30 min (sometimes 24 min)
1 muhurta	2 dandas	60 minutes (sometimes 48 min)
1 prahara= 1/4th of a day or night	6 or 7 dandas	3 hours
Yama= 1 day or night	4 praharas	12 hours
1 Fortnight	15 days + nights	Half month