Both above mentioned problems can be avoided when observations are timestamped not only with the local time, but also the present offset from UTC/the time zone they are experienced in. Some frequently used tools for personal science (such as the Apple Watch/Apple Health) store the data in this way, but this seems to be the exception from the rule. | Both above mentioned problems can be avoided when observations are timestamped not only with the local time, but also the present offset from UTC/the time zone they are experienced in. Some frequently used tools for personal science (such as the Apple Watch/Apple Health) store the data in this way, but this seems to be the exception from the rule. |