🇮🇹 Rome ↔ 🇺🇸 San Francisco

Rome is usually 9 hours ahead of San Francisco. Both observe daylight saving time, so the difference shifts by an hour for a few weeks around the spring and autumn changeovers.

Sunrise 5:36 AMSunset 8:50 PM(local)

Sunrise 5:49 AMSunset 8:36 PM(local)

Rome: daylight saving timeNow UTC+2. Next change: October 25, 2026 — clocks go back 1 hour.
San Francisco: daylight saving timeNow UTC-7 PDT. Next change: November 1, 2026 — clocks go back 1 hour.
RomeUTC+2
San FranciscoUTC-7PDT

🇮🇹 Rome

Dialing code+39
Population2,318,895
Coordinates41.89°N, 12.51°E
Elevation20 m

🇺🇸 San Francisco

Dialing code+1
Population827,526
Coordinates37.77°N, 122.42°W
Elevation16 m

No comfortable common working hours — these cities barely overlap.

25 October 2026 — 1 November 2026: the gap is 8h instead of the usual 9h — Rome and San Francisco change clocks on different days.

Working hours assumed 9:00–18:00.

Frequently asked questions

What is the time difference between Rome and San Francisco?
Rome is 9 hours ahead of San Francisco. 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 Rome and San Francisco?
There is no hour when standard working hours (9:00–18:00) overlap in both Rome and San Francisco, so any call falls outside business hours for at least one side.
Why does the time difference between Rome and San Francisco change?
Because Rome and San Francisco switch to or from daylight saving time on different dates, the gap between them is temporarily larger or smaller for a few weeks around those changes.