While uploading a record list, you can add the time zone information for each record, so Talkdesk Dialer™ doesn’t call records outside the campaign calling hours. You can add different time zones per record.
For more details about uploading lists click here and about all the mandatory and extra fields in a list consult here.
You’ll need to know what is the time zone in the supported format, according to the Time Zone Database (or Tz database), which is a collaborative compilation of information about the world's time zones. Please check the below: