Stop Doing Math Before Meetings: The Ultimate Guide to Managing Global Time Zones
Mental gymnastics to figure out what time it is in Tokyo? You're doing it wrong. Here's why your team needs a visual time zone board, not a calculator. -
The hours that work for both Seoul and Seattle are 8:00 AM to 10:00 AM (Seoul) and 4:00 PM to 6:00 PM (Seattle). Seattle is 16 hours behind Seoul, which leaves a narrow 2-hour window. Treat 8:00 AM in Seoul (4:00 PM in Seattle) as the time and build around it. When booking, note that Seattle is on the previous day — it's worth spelling out the full date in the invite. One seasonal catch: Seattle springs forward and falls back, but Seoul doesn't, so the gap changes by an hour for several months of the year. To edit hours, add more timezones, and share with your team, create a free collaborative board.
| UTC (GMT+0) | 12am | 1am | 2am | 3am | 4am | 5am | 6am | 7am | 8am | 9am | 10am | 11am | 12pm | 1pm | 2pm | 3pm | 4pm | 5pm | 6pm | 7pm | 8pm | 9pm | 10pm | 11pm | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Seoul Asia/Seoul | 9am | 10am | 11am | 12pm | 1pm | 2pm | 3pm | 4pm | 5pm | 6pm | 7pm | 8pm | 9pm | 10pm | 11pm | Next Day 12am | 1am | 2am | 3am | 4am | 5am | 6am | 7am | 8am | |
| Seattle America/Los Angeles | 5pm | 6pm | 7pm | 8pm | 9pm | 10pm | Previous Day 11pm | 12am | 1am | 2am | 3am | 4am | 5am | 6am | 7am | 8am | 9am | 10am | 11am | 12pm | 1pm | 2pm | 3pm | 4pm |
Mental gymnastics to figure out what time it is in Tokyo? You're doing it wrong. Here's why your team needs a visual time zone board, not a calculator. -