🇦🇺 Perth ↔ 🇺🇸 Chicago
Perth is usually 13 hours ahead of Chicago. Chicago observes daylight saving time and Perth does not, so the difference shifts by an hour around the changeovers.
Sunrise 7:18 AMSunset 5:21 PM(local)
Sunrise 5:17 AMSunset 8:30 PM(local)
🇦🇺 Perth
Dialing code+61
Population2,309,338
Coordinates31.95°S, 115.86°E
Elevation34 m
🇺🇸 Chicago
Dialing code+1
Population2,664,452
Coordinates41.85°N, 87.65°W
Elevation179 m
No comfortable common working hours — these cities barely overlap.
Working hours assumed 9:00–18:00.
Frequently asked questions
- What is the time difference between Perth and Chicago?
- Perth is 13 hours ahead of Chicago. Use the side-by-side clocks and the day/night strips above to convert any hour between them.
- When is the best time to call between Perth and Chicago?
- There is no hour when standard working hours (9:00–18:00) overlap in both Perth and Chicago, so any call falls outside business hours for at least one side.
- Why does the time difference between Perth and Chicago change?
- Because at least one of Perth and Chicago observes daylight saving time, the difference shifts by an hour when one city changes its clocks and the other has not yet (or does not).