The best time for a meeting between Seattle and Rio de Janeiro is inside the overlap of their working days — the hours when both cities are between 09:00 and 17:00 local time. In January the overlap is 0 hours; in July it is 8 hours. This page shows the overlap hour by hour, the best windows, the daylight saving dates that move the overlap, and the scheduling etiquette for this pair of cities.
Try the tool: Meeting Planner — see what time a proposed meeting is in Seattle and Rio de Janeiro, side by side.
Try the tool: Meeting Time Finder — enter the working hours for Seattle and Rio de Janeiro and find the overlap automatically.
Overlap between Seattle and Rio de Janeiro — hour by hour
The table shows every hour from 08:00 to 20:00 in Seattle, what time it is in Rio de Janeiro, and whether both cities are in their working day (09:00–17:00).
January
| Seattle time | Rio de Janeiro time | Seattle working? | Rio de Janeiro working? | Overlap? |
|---|---|---|---|---|
| 08:00 | 13:00 | No | No | No |
| 09:00 | 14:00 | Yes | No | No |
| 10:00 | 15:00 | Yes | No | No |
| 11:00 | 16:00 | Yes | No | No |
| 12:00 | 17:00 | Yes | No | No |
| 13:00 | 18:00 | Yes | No | No |
| 14:00 | 19:00 | Yes | No | No |
| 15:00 | 20:00 | Yes | No | No |
| 16:00 | 21:00 | Yes | No | No |
| 17:00 | 22:00 | No | No | No |
| 18:00 | 23:00 | No | No | No |
| 19:00 | 00:00 | No | No | No |
July
| Seattle time | Rio de Janeiro time | Seattle working? | Rio de Janeiro working? | Overlap? |
|---|---|---|---|---|
| 08:00 | 12:00 | No | No | No |
| 09:00 | 13:00 | Yes | Yes | Yes |
| 10:00 | 14:00 | Yes | Yes | Yes |
| 11:00 | 15:00 | Yes | Yes | Yes |
| 12:00 | 16:00 | Yes | Yes | Yes |
| 13:00 | 17:00 | Yes | Yes | Yes |
| 14:00 | 18:00 | Yes | Yes | Yes |
| 15:00 | 19:00 | Yes | Yes | Yes |
| 16:00 | 20:00 | Yes | Yes | Yes |
| 17:00 | 21:00 | No | No | No |
| 18:00 | 22:00 | No | No | No |
| 19:00 | 23:00 | No | No | No |
The best meeting windows
In July the best windows are 09:00–17:00 in Seattle (13:00–21:00 in Rio de Janeiro).
Daylight saving and the overlap
Seattle observes daylight saving: in 2026 the clocks go forward on 8 March 2026 and back on 1 November 2026, moving the offset from UTC−08:00 to UTC−07:00.
Rio de Janeiro does not observe daylight saving, so its offset of UTC−03:00 never changes.
The overlap shifts on Sunday, 8 March 2026 and Sunday, 1 November 2026 in 2026, when the difference between the cities changes from 5 hours ahead to 4 hours ahead (and again on the later dates). A recurring meeting set in one city's local time will move by an hour on the other side on those dates. Set the calendar event in UTC to avoid it, or check the overlap again after each change. The DST pages — Seattle DST 2026 and Rio de Janeiro DST 2026 — give the exact dates.
Scheduling etiquette for Seattle and Rio de Janeiro
Scheduling inside the Americas is usually straightforward: the difference between Seattle and Rio de Janeiro is small, and the working days overlap for most of the day. The main thing to check is daylight saving — not every place in the Americas observes it, and the ones that do change on different dates (the United States and Canada in March and November, Chile in September and April, Mexico not at all since 2022).
A few rules apply to every pair. Avoid Monday mornings and Friday afternoons — they are the edges of the week in every zone, and a meeting there is the first to be skipped. Avoid the weeks when the clocks change — the overlap moves, and a standing meeting lands at the wrong time. Always send the time in UTC as well as in each participant's local time, so nobody has to do the conversion in their head. And if the meeting has to happen outside someone's working hours, rotate it: a team that always meets at 09:00 in Seattle is always meeting at 14:00 in Rio de Janeiro, and the Rio de Janeiro side will quietly disengage if that hour is always theirs to give up.
Worked examples
Three proposed times, worked out for January:
| Proposed time | In Seattle | In Rio de Janeiro | Verdict |
|---|---|---|---|
| 09:00 Seattle time | 09:00 | 14:00 | Inside both working days |
| 12:00 Seattle time | 12:00 | 17:00 | Outside at least one working day |
| 16:00 Seattle time | 16:00 | 21:00 | Outside at least one working day |
In July, the Rio de Janeiro times move by 1 hour, so check the July table above. The individual city pages — time in Seattle and time in Rio de Janeiro — have the working-hours tables for each city.
Seattle and Rio de Janeiro at a glance
| Fact | Seattle | Rio de Janeiro |
|---|---|---|
| Country | United States | Brazil |
| IANA time zone | America/Los_Angeles |
America/Sao_Paulo |
| Standard offset | UTC−08:00 | UTC−03:00 |
| Daylight saving offset | UTC−07:00 | — does not observe |
| Offset in January 2026 | UTC−08:00 | UTC−03:00 |
| Offset in July 2026 | UTC−07:00 | UTC−03:00 |
| Difference in January | 5 hours ahead | |
| Difference in July | 4 hours ahead |
Making it work week to week
There is no overlap between Seattle and Rio de Janeiro, so a recurring meeting will always cost someone their evening or their early morning. The sustainable answer is to rotate the awkward hour week by week, to keep the meeting short and infrequent — fortnightly rather than weekly where the work allows — and to do as much as possible asynchronously. A decision made in writing can be read by the person who was asleep; a decision made in a meeting has to be re-explained to them. The best global teams meet live only for the things that need live conversation, and write down everything else.
Whatever the overlap, the calendar mechanics are the same: set the event in UTC, not in local time, so it moves correctly when the clocks change; include the local time for each city in the invitation body; and re-check the overlap in March and October, when the difference moves. The meeting time finder finds the overlap for a whole team, and the time difference calculator works out the difference for any date.
Frequently asked questions
What is the best time for a meeting between Seattle and Rio de Janeiro?
There is no hour inside both working days. Meet at the edge of the day and rotate the awkward hour.
How many hours overlap between Seattle and Rio de Janeiro?
In January the working days overlap for 0 hours; in July for 8 hours.
What time is it in Rio de Janeiro when it is 09:00 in Seattle?
It is 14:00 in January and 13:00 in July.
Does the overlap between Seattle and Rio de Janeiro change during the year?
Yes — it shifts on Sunday, 8 March 2026 and Sunday, 1 November 2026 in 2026, when the difference changes.
What is the time difference between Seattle and Rio de Janeiro?
Rio de Janeiro is 5 hours ahead Seattle in January and 4 hours ahead Seattle in July. Use the time zone converter for the full comparison.
Sources
- IANA Time Zone Database, via Node.js Intl (
Intl.DateTimeFormatwithtimeZone) — offsets, daylight saving dates and local times in this article were worked out from the IANA database, not typed from memory. - TimeFlow's own time-zone data (
data/cities.ts,data/dst.ts), computed from the IANA database. - TimeFlow's meeting planner and meeting time finder — the live tools behind the numbers on this page.
- Time-zone and daylight saving rules are set by governments and can change. For flights, deadlines and meetings that cannot move, confirm the time with an official source.