Local time varies by a time zone offset which is applied according to the longitude of the location.
However, NTP does not use local time. NTP utilizes Universal Coordinated Time (UTC), it does not recognize time zones.
UTC is a time standard which is not adjusted for time zones or daylight saving time (DST). Universal Coordinated Time is the same world-wide, regardless of location.
The operating systems of client computers are responsible for the application of any time zone offset.
Therefore, a client computer located anywhere in the world is able to correctly synchronize to a NTP server regardless of its location.