Stephen Hawking described 3 arrows of time.

The thermodynamic arrow of time- entropy cannot decrease, thus time moves forward. The psychological arrow of time- the direction humans perceive time progressing. The cosmological arrow of time- time moves forward as the universe expands.

But he forgot the parents in-law arrow of time. Time is still the same but moves at different speeds. Times moves faster at first then slows down a lot when you get frustrated with them being in your space.