All scheduling times are automatically in your local time zone. If you need content to go out at a different time zone, you can use tools such as World Time Buddy or TimeAndDate to compare other timezones against your own.
Keep in mind that Gain automatically adjusts the time zone according to your location. If you travel, you will be posting in your current location’s time.
When you choose a publish date, you will be able to view your local time zone.
Greenwich Mean Time (GMT) is the clock time at the Royal Observatory in Greenwich, London. It is the same all year round and is not affected by Summer Time or Daylight Saving Time. You can read more about it here.