San Mateo, CA, USA to Honolulu Time Converter
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Quick answers
Selected conversion
5:00 am05:00 PDT (UTC-7), Oct 27, 2026 = 2:00 am02:00 HST (UTC-10), Oct 27, 2026
San Mateo is 3 hours ahead of Honolulu.
How the time difference changes
For most of the year, San Mateo, CA, USA is 3 hours ahead of Honolulu. From Nov 1, 2026 to Mar 14, 2027, San Mateo, CA, USA is 2 hours ahead of Honolulu.
For most of the year, working hours of 9:00 am to 6:00 pm in San Mateo, CA, USA correspond to 6:00 am to 3:00 pm in Honolulu. At other times of the year, working hours of 9:00 am to 6:00 pm in San Mateo, CA, USA correspond to 7:00 am to 4:00 pm in Honolulu.For most of the year, working hours of 09:00 to 18:00 in San Mateo, CA, USA correspond to 06:00 to 15:00 in Honolulu. At other times of the year, working hours of 09:00 to 18:00 in San Mateo, CA, USA correspond to 07:00 to 16:00 in Honolulu.
Compare San Mateo time with Honolulu time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.
Time Difference
PDT (Pacific Daylight Time) is 3 hours ahead of HST (Hawaii Standard Time).
5:00 am05:00 in San Mateo, CA, USA is 2:00 am02:00 in Honolulu, HI, USA
San Mateo to Honolulu call time
Best time for a conference call or a meeting is between 12pm-6pm12:00-18:00 in San Mateo which corresponds to 9am-3pm09:00-15:00 in Honolulu
5:00 am05:00 PDT (Pacific Daylight Time) (San Mateo, CA, USA). Offset UTC -7:00 hours
2:00 am02:00 HST (Hawaii Standard Time) (Honolulu, HI, USA). Offset UTC -10:00 hours
5:00 am05:00 San Mateo, CA, USA / 2:00 am02:00 Honolulu, HI, 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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San Mateo Time Zone and Facts
Time Zone
PST – Pacific Standard Time, UTC-8 (standard time)