https://www.theregister.com/2020/04/02/boeing_787_power_cycle_51_days_stale_data/
51 days * 86400 seconds * 1000
=> 4406400000
2^32
=> 4294967296
>>> round((4406400000 - 2**32)/(1000 * 3600), 3) 30.954
Or just ticking every 1.025 ms (e.g. at 975 Hz instead of 1khz)… that brings us to : (4406400000 - 1.025*2 ^ 32)/1000 so a difference of 1.12 hours with the “51 days” mention.