Honolulu to San Mateo time converter

San Mateo is 18 hours ahead of Honolulu. When it is 9:00 AM in Honolulu, it is 3:00 AM (Tue, Oct 20) in San Mateo.

Honolulu HST

Monday, October 19, 2026

San Mateo PHT

Tuesday, October 20, 2026

Honolulu
Hawaii, United States
Mon, Oct 19
HSTUTC-10
San Mateo
Philippines
Tue, Oct 20
PHTUTC+8+18h
Finding your time zone…
Shared working hours (9:00–18:00)

Honolulu to San Mateo conversion table

Every hour of today in Honolulu and the matching time in San Mateo. Light rows are typical working hours (9:00–18:00).

HonoluluSan Mateo
12:00 AM6:00 PM
1:00 AM7:00 PM
2:00 AM8:00 PM
3:00 AM9:00 PM
4:00 AM10:00 PM
5:00 AM11:00 PM
6:00 AM12:00 AM+1 day
7:00 AM1:00 AM+1 day
8:00 AM2:00 AM+1 day
9:00 AM3:00 AM+1 day
10:00 AM4:00 AM+1 day
11:00 AM5:00 AM+1 day
12:00 PM6:00 AM+1 day
1:00 PM7:00 AM+1 day
2:00 PM8:00 AM+1 day
3:00 PM9:00 AM+1 day
4:00 PM10:00 AM+1 day
5:00 PM11:00 AM+1 day
6:00 PM12:00 PM+1 day
7:00 PM1:00 PM+1 day
8:00 PM2:00 PM+1 day
9:00 PM3:00 PM+1 day
10:00 PM4:00 PM+1 day
11:00 PM5:00 PM+1 day

Best time to call or meet

Both sides are at work from 3:00 PM – 6:00 PM in Honolulu (9:00 AM – 12:00 PM in San Mateo).

Daylight saving time and the difference

The difference stays 18 hours all year.

Distance

Honolulu and San Mateo are 8,510 km (5,288 miles) apart in a straight line.

More conversions

San Mateo to HonoluluHonolulu to New YorkHonolulu to LondonHonolulu to Los AngelesHonolulu to ChicagoHonolulu to TorontoHonolulu to São PauloHonolulu to ParisHonolulu to BerlinHonolulu to MoscowHonolulu to DubaiHonolulu to New DelhiHonolulu to Bangkok
New York to San MateoLondon to San MateoLos Angeles to San MateoChicago to San MateoToronto to San MateoSão Paulo to San MateoParis to San MateoBerlin to San MateoMoscow to San MateoDubai to San MateoNew Delhi to San MateoBangkok to San Mateo

Questions and answers

What is the time difference between Honolulu and San Mateo?

San Mateo is 18 hours ahead of Honolulu.

What time is it in San Mateo when it is 9 AM in Honolulu?

When it is 9:00 AM in Honolulu, it is 3:00 AM (Tue, Oct 20) in San Mateo.

When is the best time to call San Mateo from Honolulu?

Both sides are at work from 3:00 PM – 6:00 PM in Honolulu (9:00 AM – 12:00 PM in San Mateo).

Does the time difference between Honolulu and San Mateo change?

No. The difference stays 18 hours all year.