Issues with timezone

Hi,

I've been browsing the forum for quite sometime but yet found a solution to my issue, hope someone can help:

1. Have a sharepoint list with 2 date/time picker (i.e. '1st Appointment' & 'Next/Last Appointment')

2. Had changed my regional settings to local time (i.e. Kuala Lumpur/Singapore)

3. Tried applying 'timezone converter' but didn't work (maybe because it is 2 dates/time instead of 1?)

I've also another flow with the same issue