In hindu cosmology there is a part of the universe called the “vishnu nabhi”.
In modern cosmology we understand the planets as revolving around the sun but we do not know what precisely governs the motion of the sun. In hindu cosmology the sun is understood to revolve around the vishnu nabhi.
It is not clear what precisely the vishnu nabhi is, whether it is a star or a black hole or some sort of space that is a point around which something revolves or if it is something else.
Links related to hindu cosmology:
In hindu time the shortest unit of measurement is a blink of an eye: