If you want the system to correctly determine the prospects' time zone during CSV import, make sure the following criteria are met:
The Country column:
Cannot be blank;
The country name should be written in full (i.e. France) or as an abbreviation (i.e. FR).
The State column:
Can be blank only if the City column has a value;
The state name should be written in full (i.e. California) or as an abbreviation (i.e. CA).
The City column:
Can be blank only if the State column has a value;
The city name should be written in full (i.e. New York).
If the system cannot determine the time zone, it applies the user's time zone to the prospect.
Important: all names must comply with ISO 3166, the international standard for country codes and codes for their subdivisions. This means that all names must be standardized and cannot be arbitrary.