Scheduling Meetings Across Time Zones: A Step-by-Step Guide from Japan

First, find out how many hours actually overlap

Choosing a meeting time isn’t about subtracting time differences; it’s about finding the overlap. Convert the other side’s working hours (roughly 9:00–18:00) into Japan time and you can see at a glance how much room you have.

Looking at this table makes the difficulty of each region clear. Asia and Oceania overlap directly during the day. Europe only connects from Japan’s evening onward. And the US East Coast barely overlaps at all if both sides keep normal working hours.

Steps for choosing a meeting time

1. 1

   1. Pin down their city

   Confirm “New York” or “Los Angeles”, not just “the US”. Some countries span several time zones, and the US East and West Coasts are 3 hours apart.

2. 2

   2. Look at the actual local time right now

   Check the current time in their city with a world time tool. It shows the time difference as it is right now, daylight saving included, so you don’t have to work out whether it’s summer or winter there.

3. 3

   3. Offer two or three slots

   Proposing only one leads to more back-and-forth. Offer options of different kinds, such as one in their morning and one in their afternoon, and it’s more likely to be settled in one go.

4. 4

   4. Watch the date line when you write it

   With a large time difference, Tuesday evening in Japan is Tuesday morning for them, and Wednesday morning in Japan is Tuesday evening for them. Always write the day of the week for both sides.

5. 5

   5. Confirm it with a calendar invitation

   Make the final confirmation with a calendar invitation, not verbally or in the body of an email. Invitations display in each person’s own device time zone, so no conversion mistakes can creep in.

The date mix-up in step 4 is one of the hardest time-zone mistakes to recover from. If the other side turns up to the meeting a day early or late, deadlines slip by that much too. Make a habit of writing the day of the week and the date together.

Three time formats to put in the invitation

When you write the time in the message, listing the following three side by side all but eliminates misunderstandings. With only one, the reader still has room to convert it wrong.

• Their local time: what they use to decide whether they can attend. Add the day of the week and the date
• Japan time (JST): the reference for you and your colleagues
• UTC: a common language when people from a third country join

Daylight saving changes break recurring meetings

A weekly meeting set at the same time suddenly moves by an hour one week. The cause is almost always daylight saving time. Japan has no summer time, so only the other side moves, and the time difference itself changes.

• Europe: starts on the last Sunday in March and ends on the last Sunday in October. London goes from −9h to −8h, and Paris and Berlin from −8h to −7h
• North America: starts on the second Sunday in March and ends on the first Sunday in November. New York goes from −14h to −13h
• Australia (Sydney): from early October to early April. The difference from Japan goes from +1h to +2h
• Countries without it: Japan, South Korea, China, India, Singapore, the UAE, Russia and others

The tricky part is that each region switches on a different date. For about two weeks, from the second Sunday in March to the last Sunday, only North America is on summer time. During that period alone, the usual time difference doesn’t apply.

Keeping the burden from falling on one side

In meetings across time zones, someone always takes the early morning or late night. If it’s the same side every time, resentment quietly builds. Evening it out through how you run things is the realistic solution.

1. 1

   Take turns with early and late slots

   Switching every other week, or swapping each month, keeps things feeling fair. The trick is to announce “let’s take turns” at the start.

2. 2

   Have fewer all-hands meetings

   Replace agenda items that are just updates with recordings and minutes. Only decisions and discussion need everyone there at the same time.

3. 3

   Send materials before the meeting

   Concentration drops in late-night and early-morning meetings. If people read in advance and bring questions, you can shorten the meeting itself.

4. 4

   Design meetings in 30-minute units

   For meetings across time zones, two 30-minute sessions are less of a burden than one 60-minute one. Visualizing how you spend your time and knowing the total amount of late-night meetings per week makes them easier to adjust.

• Check the other country’s public holidays first (be especially careful with long ones such as Lunar New Year, Japan’s Golden Week, Thanksgiving and the Christmas holidays)
• Avoid Friday evenings. You won’t hear back until the next week
• Record late-night meetings so people can catch up the next day
• For the first meeting only, join 5 minutes early to check the connection and audio

FAQ

How can I avoid mistakes when calculating time differences?

Rather than adding and subtracting yourself, the reliable way is to check with a tool that shows local times directly. It shows the current difference including whether daylight saving time is in effect, so you avoid seasonal mistakes.

If I send a calendar invitation, do I still need to write the times?

The invitation itself is accurate because it displays in each person’s time zone, but writing their local time and Japan time in the message prevents mix-ups among people who read only the email and not the invitation.

What time is usually chosen for meetings with the US?

For the East Coast, realistic options are 8:00–9:00 in Japan (their previous evening) or around 23:00 in Japan (their morning). Either way one side is outside working hours, so taking turns is the ideal arrangement.

How should I handle India’s 3.5-hour difference?

India is UTC+5:30, so its difference from Japan is 3.5 hours, a half-hour offset. If you set a round time such as 10:00 or 14:00 in Japan, it becomes 6:30 or 10:30 for them. If you want their time to be round too, shift the Japan time by 30 minutes.