almost a technocrat

This table provides a list of countries along with their ISO 3166-1 alpha-2 country codes and corresponding GMT (Greenwich Mean Time) offsets. The GMT offset represents the time difference between the country's local time and Greenwich Mean Time, which serves as a reference point for global timekeeping.

This city codes are provided in the watch user manual but for the ease of references from the web, I put this table into this blog post for future reference using my smartphone. This is a world time watch, I will definitely need it in future. Hope you find this useful too.