Actual Day-/Night times (real sunrise and sunset in ATS) for American Truck Simulator
Swaps ATS sunrise and sunset for each location's real times, updated weekly: longer days in summer and shorter ones in winter. Updated on October 24, 2026.
Download Actual Day-/Night times (real sunrise and sunset in ATS)
More screenshots on Steam Workshop ↗
What this mod does
Actual Day-/Night times is a mod by Erbkaiser for American Truck Simulator. It replaces the midsummer day the game always uses with the real sunrise and sunset times for each location. It has more than 100,000 subscribers.
How it works
- The game only supports one reference day per week, so the mod uses the next Wednesday.
- The author updates it every week.
- Days are longer in summer and shorter in winter.
- It doesn’t change the in-game calendar or the weather, and it doesn’t add snow or seasonal textures.
Compatibility
It works with almost every mod. Load it above graphics, weather and map mods. Use only one day-length mod at a time. The author also offers separate fixed versions: shortest day, about 10 hours, and equal day and night, about 12 hours.
Note for Mexico
The author doesn’t support combining it with the Reforma map. He explains that its coordinates aren’t accurate and that it applies daylight saving time in Mexico, which he considers incorrect. ATS uses permanent daylight saving time, which causes offsets in winter in areas like Arizona.
Version
The author doesn’t list a game version. It’s a small file that changes every week; the latest update is from October 24, 2026.
Holyfix Check
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Load your game.log.txt and check whether this mod is for your ATS version, whether you're missing a mod or DLC it needs and where to place it.
It's in Documents › American Truck Simulator › game.log.txt. It's read in your browser: the file is never uploaded.
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User rating
Our rating
0.0 / 5- Days and nights that change with the seasons
- Updated every week
- Works with almost every mod
- The author doesn't list a game version. It may cause errors on 1.61; Holyfix will warn you if so.
- Not compatible with the Reforma map
- Use only one day-length mod at a time
- ATS uses permanent daylight saving time: there may be offsets in winter in some areas
Requirements
- American Truck Simulator
- No DLC or other mods needed
- Not compatible with the Reforma map, according to the author
How to install it
- Open the mod's page on Steam Workshop and click “Subscribe”.
- Wait for Steam to download it and launch American Truck Simulator.
- In the Mod Manager, enable Actual Day-/Night times and confirm the changes.
- Place it above graphics, weather and map mods.
- Disable any other mod that changes day length.
Common problems
Does it use my computer's clock?
No: the author clarifies that it applies the sunrise and sunset times of each place on the map.
Does it work with the Reforma map?
No, the author doesn't support it because of the map's coordinates and daylight saving time in Mexico.
Does it change the weather or add snow?
No, only daylight hours; you need other mods for that.
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