Shorten support day automatically during weeks when UK and US daylight saving time don't overlap

[AlidaOdendaal]

Our support hours currently run from 6am to 3am London time. The 3am end time is derived from the fact that we need to offer support until 7pm Pacific Time, and the London time is 8 hours ahead of PT time for most of the year. The exception is for a few weeks during March and October/November, since the US and UK do not transition to and from daylight saving time simultaneously. During those weeks, London is 7 hours ahead of PT, implying that scheduling until 3am London time actually corresponds to 8pm PT, unnecessarily keeping our PT agents working late.

Currently, we solve this by manually shortening the support day during those weeks, but ideally, this should be automated.