Best overlap: 12:30 PM to 6:30 PM in Chennai is 8:00 AM to 2:00 PM in London.
12:30 PM to 6:30 PM in Chennai is when London is also working, at 8:00 AM to 2:00 PM their time. The 4.5-hour gap barely gets in the way — you've got 6 hours of overlap, so pick whatever time fits the agenda. Just remember London changes its clocks for daylight saving and Chennai doesn't, so confirm the overlap whenever the seasons turn.
| Local time | 12am | 1am | 2am | 3am | 4am | 5am | 6am | 7am | 8am | 9am | 10am | 11am | 12pm | 1pm | 2pm | 3pm | 4pm | 5pm | 6pm | 7pm | 8pm | 9pm | 10pm | 11pm |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Chennai Asia/Kolkata | ||||||||||||||||||||||||
London Europe/London |
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