Honolulu to San Mateo, CA, USA Time Converter
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Quick answers
Selected conversion
2:00 am02:00 HST (UTC-10), Oct 27, 2026 = 5:00 am05:00 PDT (UTC-7), Oct 27, 2026
Honolulu is 3 hours behind San Mateo.
How the time difference changes
For most of the year, Honolulu is 3 hours behind San Mateo, CA, USA. From Nov 1, 2026 to Mar 14, 2027, Honolulu is 2 hours behind San Mateo, CA, USA.
For most of the year, working hours of 9:00 am to 6:00 pm in Honolulu correspond to 12:00 pm to 9:00 pm in San Mateo, CA, USA. At other times of the year, working hours of 9:00 am to 6:00 pm in Honolulu correspond to 11:00 am to 8:00 pm in San Mateo, CA, USA.For most of the year, working hours of 09:00 to 18:00 in Honolulu correspond to 12:00 to 21:00 in San Mateo, CA, USA. At other times of the year, working hours of 09:00 to 18:00 in Honolulu correspond to 11:00 to 20:00 in San Mateo, CA, USA.
Compare Honolulu time with San Mateo time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.
Time Difference
HST (Hawaii Standard Time) is 3 hours behind PDT (Pacific Daylight Time).
2:00 am02:00 in Honolulu, HI, USA is 5:00 am05:00 in San Mateo, CA, USA
Honolulu to San Mateo call time
Best time for a conference call or a meeting is between 9am-3pm09:00-15:00 in Honolulu which corresponds to 12pm-6pm12:00-18:00 in San Mateo
2:00 am02:00 HST (Hawaii Standard Time) (Honolulu, HI, USA). Offset UTC -10:00 hours
5:00 am05:00 PDT (Pacific Daylight Time) (San Mateo, CA, USA). Offset UTC -7:00 hours
2:00 am02:00 Honolulu, HI, USA / 5:00 am05:00 San Mateo, CA, USA
Choose an hour to update the converter. Day labels such as “next day” or “+1” are relative to the selected date in the first column. Use Up and Down arrow keys, Home or End to move between hours, then Enter or Space to select.
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Honolulu Time Zone and Facts
Time Zone
Honolulu Facts
San Mateo Time Zone and Facts
Time Zone
PST – Pacific Standard Time, UTC-8 (standard time)