Currency: Dollar ($)
Key phrase to learn: That’s hella good (I like that a lot)
Time difference: San Francisco is eight hours behind London
Average flight time: Two hours and 20 minutes
International phone code: +1
Emergency services number: 112
Public holidays: New Year’s Day (January 1), Martin Luther King’s Birthday (January 18), President’s Day (third Monday in February), Memorial Day (last Monday in May), Independence Day (July 4), Labor Day (first Monday in September), Columbus Day (second Monday in October), Veterans Day (November 11), Thanksgiving (fourth Thursday in November), Black Friday (Friday after Thanksgiving), Christmas Day (December 25).
Link to FCO travel advice: https://www.gov.uk/foreign-travel-advice/usa