Time is a dimension of space-time-reality.
From the perspective of a 3 dimensional space-time-reality, time has 4 dimensions of reality in space:
Dimension one is Spin:
Spin is measured in earth days.
It takes our planet Earth one day to complete one spin on its polar axis.
It takes 24 hours from one sun-rise until the next apparent sun-rise.
However it is the spin of the earth relative to a stationary sun that causes the sun to rise at the same time each day.
Dimension two is Orbit:
Orbit is measured in earth years.
It takes our planet earth one year to complete one orbit of our sun.
It is the tilt of the earth on its axis that allows the experience of 4 different seasons during each orbit.
Dimension three is Rotation:
Rotation is measured in celestial ages.
It takes the solar system 12 ages or 26,000 years to complete one rotation on its solar axis.
The solar system is currently rotating out of the Age of Pisces and into the Age of Aquarius.
Dimension four is Revolution:
It takes our solar system million of earth years to complete one revolution of our Milky Way galaxy.
A journey so vast it can be measured in light years.
Each dimension of time is relative to its own dimension of space.