Articles
Guides on time zones, daylight saving time, and scheduling meetings across the world.
Reading a Business Hours Overlap Matrix Across Time Zones
How to read a working-hours overlap grid for a city pair, what a 'golden overlap window' actually means, and what to do when two locations have little or no working-hours overlap at all.
6 min readbusinessmeetingsWorld Clock vs. Time Zone Converter: What's the Difference, and Which One Do You Need?
A world clock and a time zone converter solve two different problems that look similar on the surface. Here's how to tell which one actually answers your question.
6 min readtoolsbasicsWhy You Should Store Every Timestamp in UTC (and Convert Only for Display)
The DST bugs, ambiguous local times, and cross-timezone data corruption that come from storing local time instead of UTC — and the simple convention that avoids all of them.
6 min readtechnicaldevelopersThe International Date Line: Why It Exists and Why It Zigzags
The line where the calendar date changes isn't straight, isn't a legal boundary, and has moved more than once. Here's why it exists and how crossing it can put you a day in the past — or the future.
6 min readgeographybasicsWhy Some Time Zones Are Offset by 30 or 45 Minutes Instead of a Full Hour
India's UTC+5:30, Nepal's UTC+5:45, Newfoundland's UTC-3:30, and a handful of other odd offsets — how they came about and why they've stuck around.
6 min readoffbeatgeographyWhat Is the IANA Time Zone Database, and Why Does Every App Rely on It?
A look at the tz database that quietly powers time zone conversion in nearly every operating system and browser: who maintains it, how its naming convention works, and how often it updates.
6 min readianatechnicalThe Science of Jet Lag: Why Flying East Feels Worse Than Flying West
What actually causes jet lag, why your body clock struggles more after eastward travel than westward travel, and the light, food, and sleep timing strategies with real evidence behind them.
6 min readtravelhealthHow to Schedule Meetings Across a Distributed Team Without Burning Out Half of It
A practical guide to finding overlap hours, rotating the pain of early or late calls fairly, and defaulting to async so time zones stop being a daily fight.
6 min readremotemeetingsUTC vs. GMT: What's the Actual Difference?
UTC and GMT are used interchangeably in everyday speech, but they're defined differently and diverge by fractions of a second. Here's what each one actually measures and why technical systems should always use UTC.
6 min readutcgmtbasicsDaylight Saving Time Rules by Country: Why the Same City Pair Can Have a Different Time Difference in March
A country-by-country look at how daylight saving time start and end dates differ — and why that changes the time difference between two cities depending on the time of year.
6 min readdstrules