Best overlap: 8:00 AM to 12:00 PM in Brisbane is 2:00 PM to 6:00 PM in Portland.
Your window to reach both cities is 8:00 AM to 12:00 PM in Brisbane, which converts to 2:00 PM to 6:00 PM in Portland. The shared window is roughly 4 hours; treat its midpoint as the default and you'll keep both teams happy. When booking, note that Portland is on the previous day — it's worth spelling out the full date in the invite. One seasonal catch: Portland springs forward and falls back, but Brisbane doesn't, so the gap changes by an hour for several months of the year.
| Local time | 12am | 1am | 2am | 3am | 4am | 5am | 6am | 7am | 8am | 9am | 10am | 11am | 12pm | 1pm | 2pm | 3pm | 4pm | 5pm | 6pm | 7pm | 8pm | 9pm | 10pm | 11pm |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Brisbane Australia/Brisbane | ||||||||||||||||||||||||
Portland America/Los Angeles |
The US to Australia gap runs 14 to 19 hours depending on the month, and someone is always in tomorrow. Exact overlap windows for every US coast, the double-DST trap, and a rotation rule that keeps it fair. -