What is Timezones? This is the Timezones present in N-OC.
Where can you find them? Editors - Calendar
This function is controlled by NAVBLUE. The Timezones are normally updated by NAVBLUE Support.
You control and change Timezones for stations through the Stations dialog.
If you have a station that isn't in the database, you can create a new one and pick available Timezones from the dropdown.
Create a new station by clicking the CALENDAR tab.
Choose your Timezone either by Timezonename or Etc/GMT (if your station is not affected by DSTs).