How long in seconds, is the day / night cycle (game day)

[Ragnaman]

I'd like to know precise amount in seconds for how long is the 100% brightness period, the decline slope and 15% brightness period;

Answer: https://wiki.factorio.com/index.php?title=Game-day

[Muffinman]

Already been done.
https://forums.factorio.com/viewtopic.php?f=5&t=5594

[Ragnaman]

Thats a nice thread;
Still, I'd like to know the time, couldnt find the values anywhere, only the ratios. Wiki doesnt have anything under "time";

Ok, found it (https://wiki.factorio.com/index.php?title=Game-day)

[Muffinman]

You didn't read it carefully then. The time for a day was in that thread, 25000 ticks. 60 ticks per second => 416 and 2/3 seconds.

[Ragnaman]

There was quite a bit of content in it, you could have posted that info on your first post, but that does not matter any more.
Thanks