Hi @ShriAzure,
Check to see if the following article would be helpful:
DateAdd, DateDiff, and TimeZoneOffset functions in PowerApps
If you using PowerApps Studio, and the local time zone is the same as the time zone under the SharePoint site, then PowerApps should handle the Time correctly without any modification.
Further, if the time displays in the wrong timezone, please take use of the TimeZoneOffset function to convert from/To UTC:
To convert to UTC (Coordinated Universal Time), add the TimeZoneOffset for the given time.
DateAdd( TimeVariable, TimeZoneOffset(), Minutes )
To convert from UTC, subtract the TimeZoneOffset (by adding the negative) for the given time.
DateAdd( TimeVariable, -TimeZoneOffset( StartTime ), Minutes )
Regards,
Michael