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@allObjects
@Gordon, that has obviously nothing to do with save or not top save. Also others have in the past complained about time inaccuracy. Many timers are usually started soon after power on. Since any interval / timeout messes with the calibration phase, it would be interesting to know how long that calibration phase lasts. For practically all applications it is good enough to start the related timers (time marks) after that calibration phase.
A change in the firmware is required, because any other software controlled delay messes with that calibration.
Sacrificing a pin, adding an RC and not repeatedly watching that pin could be used to created such a delay with current firmware. The raising could though be so slow that the time until the watch fires has great variance, and a short brown out has also an impact.