SmallWorlds operates using its own time.
To make it easy we display SmallWorlds Time in the top right corner of the Profile Page and on the site homepage. In the game just below your Mini-map and Alerts buttons.
SmallWorlds Time (SWT) is the only time you should go by when you’re in SmallWorlds.SmallWorlds uses a 24-hour clock, so at midnight the display will read 24:00. Once it ticks over to 00:00, that means a new SmallWorlds day has started.