Articles
Practical guides for booking across time zones: mismatch weeks, handoffs when there is no shared workday, India's half hour, and what to check the week the clocks change. City corridors with a written note are on the city pairs page.
Same clock, different calendar
New York and Toronto, Seoul and Tokyo, Hong Kong and Singapore, Beijing and Singapore. The offset is zero or close to it. The meetings fail on holidays, typhoons, and a week of lunar new year that only one side takes.
8 min readmeetingsholidaysThe week the clocks change: a checklist
What to check the week a region springs forward or falls back: recurring meetings, on-call handoffs, local-time cron jobs, business-hour SLAs, and the hour that happens twice or not at all.
7 min readdstoperationsA worked week for San Francisco, Berlin, and Singapore
There is no hour when all three cities are inside a normal workday. A concrete weekly design: who meets live, who reads notes, and which local times hold still between January and July.
8 min readremotemeetingsScheduling with India without rounding away the half hour
Mumbai is UTC+5:30 all year. What 9:00 AM in London, New York, Singapore, and Dubai actually is in Mumbai, and the invite habit that stops someone from 'fixing' it onto the hour.
7 min readmeetingsoffsetsScheduling with Sydney from the US, the UK, or Singapore
Sydney's clock moves in the opposite season, so the gap with New York, San Francisco, London, and Singapore has more than two settings. Which hour survives, and why January is a bad month to pretend otherwise.
8 min readdstmeetingsWhich time zone should own the calendar invite
The event's time zone holds one city's local hour and moves everyone else. How that choice plays out for London and New York, and how to stop a click on your own calendar from making it for you.
7 min readmeetingsdstA handoff note for teams with no shared workday
What to write at the end of the day when New York and Tokyo, or San Francisco and Singapore, will not both be at a desk. A format, a worked example, and the words that cause the next morning to stall.
8 min readremotemeetingsThe weeks when the US and Europe are an hour closer
How the spring and autumn mismatch weeks change a New York to London or Berlin meeting, which side of the invite moves, and what to check when the gap snaps back.
8 min readdstmeetingsReading a Business Hours Overlap Matrix Across Time Zones
How to read the green rows on a city-pair page: 9:00 AM through 5:00 PM on both sides, with the real windows for London, New York, Mumbai, and Sydney.
6 min readbusinessmeetingsWorld Clock vs. Time Zone Converter: What's the Difference, and Which One Do You Need?
A world clock answers what time it is now. A converter answers what a chosen moment becomes somewhere else. January and July are not always the test.
6 min readtoolsbasicsWhy You Should Store Every Timestamp in UTC (and Convert Only for Display)
Store a UTC instant for a moment in time, and store the local rule for anything that means 9:00 in a place. The bugs are the missing hour, the repeated hour, and a stale tzdata file.
6 min readtechnicaldevelopersThe International Date Line: Why It Exists and Why It Zigzags
The date line is a convention near the 180th meridian, not a treaty. Kiribati moved it in 1995. Samoa skipped 30 December 2011.
6 min readgeographybasicsWhy Some Time Zones Are Offset by 30 or 45 Minutes Instead of a Full Hour
India is UTC+5:30, Nepal is UTC+5:45, and Newfoundland, Iran, central Australia, and the Chatham Islands sit off the hour. Some of them also change for daylight saving.
6 min readoffbeatgeographyWhat Is the IANA Time Zone Database, and Why Does Every App Rely on It?
The tz database is the public-domain rule set behind browser time zones: who edits it, why zones are named Area/Location, and why an old copy gets Morocco wrong.
6 min readianatechnicalThe Science of Jet Lag: Why Flying East Feels Worse Than Flying West
Eastward jet lag is worse because the body clock runs a little longer than 24 hours. Light timing and melatonin have named sources. Most other travel tips do not.
6 min readtravelhealthHow to Schedule Meetings Across a Distributed Team Without Burning Out Half of It
How a team split across San Francisco, Berlin, and Singapore should split live calls, rotate the bad hour, and write the rule down.
6 min readremotemeetingsUTC vs. GMT: What's the Actual Difference?
GMT is mean solar time at Greenwich, and the name of the UK's winter clock. UTC is the atomic scale. They match on a watch. They are not the same definition.
6 min readutcgmtbasicsDaylight Saving Time Rules by Country: Why the Same City Pair Can Have a Different Time Difference in March
Clock-change dates for the US, the EU, Australia, and New Zealand, plus Chile's decree, Mexico's 2022 opt-out, and Morocco's return to UTC+0 in September 2026.
6 min readdstrules