ATS Realistic Day & Night Duration (TGModz) for American Truck Simulator
Matches sunrise and sunset to the real day length for each place and season, based on latitude. It doesn't change the game clock speed. By TGModz, free on Steam.
Download ATS Realistic Day & Night Duration (TGModz)
More screenshots on Steam Workshop ↗
What this mod does
Realistic Day & Night Duration is a mod by TGModz, who also made a well-known realistic graphics mod. It adjusts sunrise and sunset so the length of the day matches reality where you’re driving. It doesn’t change how fast time passes in the game: only when the sun rises and sets.
How it works
- Latitude drives the seasonal changes: summer days are longer in the north than in the south.
- If you have time zones enabled, it also takes longitude into account.
- The author updates it almost daily.
Version, load order and Convoy
The description lists compatibility with ATS 1.58, although the latest update is from October 19, 2026. It works in Convoy and is optional in multiplayer. The author recommends placing it above graphics mods. He asks people not to reupload it.
Known issues
Several users report problems with the Road Trip DLC: wrong or zero fuel prices for cars. One of them blames outdated state files, for example for South Dakota. There’s no confirmed fix in the visible comments. If you play Road Trip, test it first on a secondary profile.
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User rating
Highlights and things to keep in mind
- Days and nights with the real length for each area
- Doesn't change the clock speed
- Constant updates
- The description only mentions 1.58
- Fuel price issues with the Road Trip DLC
- Unknown whether it conflicts with weather mods
Requirements
- American Truck Simulator (the author lists 1.58; updated in October 2026)
- Steam account
- No DLC
How to install it
- Open the “ATS Realistic Day & Night Duration” page on Steam Workshop and click “Subscribe”.
- Launch American Truck Simulator and wait for Steam to finish downloading the mod.
- Open the Mod Manager in your profile and enable “ATS Realistic Day & Night Duration”.
- Place it above your graphics mods in the active mods list.
- If you want longitude to count, enable time zones in the game options.
Version history
-
19 Oct 2026Current
Last update (the changelog has 291 notes)
Common problems
Does it make time pass more slowly?
No. It only adjusts sunrise and sunset times to the real day length.
Where do I put it in the mod list?
Above graphics mods, according to the author.
Does it work with the Road Trip DLC?
There are reports of wrong fuel prices with that DLC; test it first on another profile.
Does it work in Convoy?
Yes, the author says it's compatible and optional in multiplayer.
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