Martine is very upset. Although she has two watches she can’t know what time it is because neither of them has an hour hand. She just noticed that there was a drift of 10 minutes per day between these two watches
She just heard on the radio that the exact hour is noon (t0) and she adjusted her watches to 00 minute, 00 second the 2nd of December. Could you help her to use them to know the hour and even the date during the hours (and days) following that initial time t0?
Assume that time increments on the watches in one second intervals.
What is the time when watch 1 indicates 36min and watch 2 indicates 38min 45s?
What is the date and the time watch 1 indicates 12mn and watch 2 indicates 52min 30s?
For how long will this method be valid?
What is the accuracy of the time measurement knowing that the two watches have second hands?