The Indian mythology also treats the passing of time, in a relativistic way. For example,

360 man years = 1 holy year
12,000 holy years = 1 yuga (4,320,000 years)
1000 yugas = 1 day for Brahma
= 4320,000,000 man years [4.3 billion]
= 1 Kalpa
1 day + 1 night of Brahma = 8.64 billion years
1 year of Brahma = 8.64 x 360 billion years
= 3.110,400 trillion years
100 years of Brahma (life)= 311.040 trillion years