UNITS of TIME in ANCIENT HISTORY

• 1 kuzhi(kuRRuzhi)= 6.66 millisecond-the time taken by the Pleiades stars(aRumin) to glitter once.
• 12(base 8 ) or 10 kuzhigaL= 1 miy= 66.6666 millisecond-the time taken by the young human eyes to flap once.
• 2 kaNNimaigaL= 1 kainodi= 0.125 second
• 2 kainodi= 1 maatthirai= 0.25 second
• 6(base 8 ) or 6 miygaL= 1 siRRuzhi(nodi)= 0.40 second-the time taken for a bubble (created by blowing air through a bamboo tube into a vessel 1 saaN high, full of water) to travel a distance of one saaN .
• 2 maatthiraigaL= 1 kuru= 0.50 second
• 2(base 8 ) or 2 nodigaL= 1 vinaadi= 0.80 second-the time for the adult human heart to beat once
• 21⁄2 nodigaL= 2 kuru= 1 uyir= 1 second
• 5 nodigaL= 2 uyir= 1 saNigam= 1/2 aNu= 2 seconds
• 12(base 8 ) or 10 nodigaL= 1 aNu= 4 seconds
• 6(base 8 ) or 6 aNukkaL= 12 saNigam= 1 thuLi= 1 naazhigai-vinaadi= 24 seconds
• 12(base 8 ) or 10 thuLigaL= 1 kaNam= 4 minutes
• 6(base 8 ) or 6 kaNangaL= 1 naazhigai= 24 minutes
• 12(base 8 ) or 10 naazhigaigaL= 4 saamam= 1 siRupozhuthu= 240 minutes= 4 hours
• 6(base 8 ) or 6 siRu-pozhuthugaL= 1 naaL(1 day)= 24 hours
• 7 naaTkaL= 1 kizhamai(1 week)
• 15 naaTkaL= 1 azhuvam(1 fortnight )
• 29.5 naaTkaL= 1 thingaL(1 lunar month)
• 2 thingaL= 1 perum-pozhuthu(1 season)
• 6 perum-pozhuthugaL= 1 AaNdu(1 year)
• 64 aaNdugaL= 1 vattam(1 cycle)
• 4096(=8^4) AaNdugaL= 1 Oozhi(1 epoch)