Knowing how to calculate time differences is important for everything from scheduling meetings to understanding historical events.
Many people ask, “What time was it 17 hours ago?” It’s a simple question, but the answer can be surprisingly tricky, especially when crossing time zones or dealing with daylight saving time.
This article will explore methods and tools — including simple calculations and online “time ago” calculators — to help you accurately figure out what time it was in the past, no matter where you are.