It's a set time each week.
Forza Horizon 4 will change its in-game season once a week, and we’ve got all the details on what’s involved.
Forza Horizon 4 seasons will change weekly at 12.30 am AEST on Fridays here in Australia, Microsoft has confirmed with Stevivor.
Horizon Summer will kick things off on 28 September, which is when early access begins, followed Horizon Autumn.
A weekly run down is as follows:
- Horizon Summer: Starts 28 September
- Horizon Autumn: Starts 5 October
- Horizon Winter: Starts 12 October
- Horizon Spring: Starts 19 October
Update: Microsoft and Playground Games have also detailed the types of content to expect alongside the changing seasons. A handy infographic is below.
From what we understand, the seasons will automatically change in game at 12.30 am AEST — there’s no need to log in and out of the game.