How the database handles clock changes

How the database handles clock changes

The data on the portal is displayed in local “clock” time. This is how most suppliers would use the data for time of day charging.

This would mean that you should see a gap for Sunday morning in April, as the local clock skipped an hour. You would also see a doubled up period in October.

The data is actually stored in UTC at the database level with the local offset stored alongside, so we can report on this, when we display it on the portal we use the time adjusted to the sites local time.

Trying to explain this can be tricky, as people often turn things round in their heads, so you will need to be clear on this when advising the client.
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