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→Data in UTC
==== Data in UTC ====
==== Data in UTC ====
An often used strategy is to save all observations in [https://en.wikipedia.org/wiki/Coordinated_Universal_Time Coordinated Universal Time], which during non-daylight-saving time defaults to ''Greenwich Mean Time'' in the UK. Typically the data is then converted to the current local time when displayed in e.g. apps or data visualizations.
An often used strategy is to save all observations in [https://en.wikipedia.org/wiki/Coordinated_Universal_Time Coordinated Universal Time], which during non-daylight-saving time is the same as ''Greenwich Mean Time'' in the UK. Typically the data is then converted to the current local time when displayed in e.g. apps or data visualizations.
While this makes the storage and calculation of correct times relatively straightforward it becomes impossible to reliably calculate the actual local time at which the data was collected when changes in time zones start to come into play.
While this makes the storage and calculation of correct times relatively straightforward it becomes impossible to reliably calculate the actual local time at which the data was collected when changes in time zones start to come into play.