San Francisco is 1 hour behind Salt Lake City. Salt Lake City uses Mountain Time (MT, UTC-7/-6) while San Francisco uses Pacific Time (PT, UTC-8/-7). When it's 12:00 PM in Salt Lake City, it's 11:00 AM in San Francisco.
Both cities observe daylight saving time on the same schedule, so the 1-hour difference remains constant throughout the year.
Best calling time: 9:00 AM - 6:00 PM Salt Lake City time. This corresponds to 8:00 AM - 5:00 PM in San Francisco, covering full business hours.
Salt Lake City has a growing tech sector with ties to Silicon Valley. Many tech companies have offices in both cities. The drive takes about 11 hours, while flights take about 1.5 hours.