If I understood correctly, the request to the time server occurs every second.
Please tell me where the timer for this request is formed?
I would like to make this request every 12 hours to correct the DS3231.
I think I need to write a loop for 43200 seconds?
Best wishes
Aleks-Ale
commented
3 years ago 
If I understood correctly, the request to the time server occurs every second. Please tell me where the timer for this request is formed? I would like to make this request every 12 hours to correct the DS3231. I think I need to write a loop for 43200 seconds? Best wishes