Convert 2021-12-20T08:54Z to 2021-12-20 05:54 from Typescript [duplicate]

Response data 2021-12-20T08:54Z

This date is 3 hours ahead of the date I requested.
2021-12-20T08:54Z

the value i want 2021-12-20 05:54

So I want to subtract 3 hours (-0300)