Problem at restart

[dan]

Thanks dan for your support.

The program scheduled consist of every station of the 3 i have, running three times a day  (every 8 hours) for 5 minutes each in a sequential way. After rebooting, all stations run simultaneously for 5 mins aprox., then station 2 goes for another 5 mins and finally, the system goes in normal state, i.e., the next cycle takes place 8 hours later, as expected.

Sorry but i don't have access to Rpi at this moment, to show the program scheduled.

Maybe the problem is related to a lack of internet access, as the Rpi hasn't got internal clock?

Regards.

Yes.

Not having internet access will definitely cause timing problems.
You might be able to add a "real time clock" such as the one from Adafruit:
https://www.adafruit.com/product/3386

I have used that on a system that runs off solar power and without an internet connection.