How to Calculate the difference between timestamps in HANA ?

Hello,

Can some one help me with the syntax to calculate the difference between two time stamps in HH:MM

For example start time : 2020-02-27 17:57:44.0 , End time : 2020-02-27 19:23:43.22

Also i am creating another calculated column to populate the date from time stamps, which function i can use to take the date from timestamp?

Thank you.

Brendon