In early January the sun does not rise in Kashgar, in China’s far west, until after 10am. Across the border, in eastern Afghanistan, it rises before 7am. That difference is the greatest jump in time ...

The world never wakes up at the same time everywhere. While some are starting their day with breakfast, others are already winding down for the night. This happens because Earth is divided into ...

Time zones keep the world running on schedule, from coordinating international flights to ensuring your morning Zoom meeting starts at exactly the right hour. While most countries operate within a ...