Three hours and 30 minutes behind Tokyo. For more than a century, India’s clocks have officially fallen short of the full hour in calculating any time difference it has with most countries.

So there are a few extra zones to accommodate them. You can’t even count on time zones being offset by an hour from the previous zone.

According to a study published this month in the Journal of Health Economics, living on the wrong side of a time zone can negatively affect how much sleep one gets, and lead to a decrease in their ...

Phoenix — and most of Arizona — doesn't observe daylight saving time, making it hard to determine what time zone it's in. Here's how to figure it out.

Nearshoring eliminates the complexity of scheduling across divergent time zones, enabling real-time collaboration, removing blockers, and supporting time-sensitive solutions.

Tennessee's two time zones, it turns out, are not that unusual. In all, 15 U.S. states have more than one time zone.