I am trying to calculate the real time using ticks. My idea was, that I know real time of some tick. For example, I know, that tick 0 is 10:00. I expected that one milisecond = one tick. After approx. 7 hours is time delayed for 12 minutes. (At this moment I have in the log 26 015 s --> 433 minutes. I started the device at 12:39. 12:39 + 433minutes = 19:52, but the real time is 20:04) Is it possible? Is possible that every tick takes different time?
Does exist any other method how to calculate real time? Probably it is possible to use GPS module, but is little bit expensive for this function
Thanks a lot for any idea!