Plants and light/darkness timing

[lalarama]

Hello fellow Stationeers

I want to have a bit more control over my little plants grwing on Mars and have therefore written a little ic code snippet that takes the input of 2 dials (one for daytime one for night, each in minutes) and switches on a growth light accordingly.
My question: if a plant has 8 minutes of light and 5 minutes of darkness as its requirement, can i simply put in these values ignoring the fact that the light cycle for this plant would then be 13 minutes instead of the normal day lenght? Or should i somehow factor in the days normal length? The plant is in complete darkness otherwise so the natural light cannot interfer.
Btw. how long is a actual day in Stationeers (on Mars)?

[Bracht]

The easiest way I found was to use two Logic IOs and a day sensor. Have a IO Reader read the day sensor's activate setting and then a IO Logic Batch Writer write that to your lighting devices. Seems to work for me.

[JeanDeaux]

The new eclipse and axis tilt (polar days/nights) might not make that a viable option.

[Bracht]

Seems to be working on Mars for me. I assume you could also use a countdown timer based on subtraction or a sleep command too.

I have a like 600 fern O2 farm underground that is growing using solar sensor activate mirror.

[G-Man]

That setup won't stress the plants but it won't be efficient. They won't get stressed but you should give them as much light as possible since that increases the light efficiency and helps the plant grow faster. Ideally you give them as much light as you can and just enough darkness to rest. A 8 minutes of light and 5 dark would average to about 12 and 8 over a 20 min day while the ideal would be 15 min light 5 min dark. I'm pretty sure extra light won't stress them, at least I've never seen it.

[God, owner of the Universe]

What worked well for me is to read a daylight sensor's sun position, which rotates around 180° (No negative values, all positive.), where noon is 0° and dawn/dusk is 90.

So I just defined "if less than 90, light is on, else light is off.", and the exact value of this number (e.g. increasing it to 120 or so) is apparently the only thing that could be improved about this, if I won't eventually wake up with a bad surprise because seasons may somehow affect this nice daily 0-180 flow.

[lalarama]

Thanks for everybodys answers.
What i took from them, is that most of you orient your cycles on the natural day and night cycle of 20 minutes but with varied light specs for each plant within that frame.
I guess i will have to experiment with giving the plants a artificial 40 min day cycle.
Perhaps i can speed up growth with 34min light and 6 min darkness.