gcal-timezones is a Chrome add-on developed by dawagner. This free program is designed to auto-select matching time-zones when you type them on Google Calendar. It is an unofficial tool and is not associated with Google in any way.

With gcal-timezones, you no longer have to manually select the correct time-zone when adding events to your Google Calendar. The add-on automatically detects the time-zone you are typing and selects the corresponding option, saving you time and ensuring accurate scheduling.

This Chrome add-on is a convenient tool for Google Calendar users who frequently deal with different time-zones. It eliminates the need for manual selection and reduces the chances of errors when scheduling events. Please note that gcal-timezones is an unofficial tool and not officially endorsed by Google.