San Mateo to Honolulu time converter

Honolulu is 18 hours behind San Mateo. When it is 9:00 AM in San Mateo, it is 3:00 PM (Mon, Oct 19) in Honolulu.

San Mateo PHT

Tuesday, October 20, 2026

Honolulu HST

Monday, October 19, 2026

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

San Mateo to Honolulu conversion table

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

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

Best time to call or meet

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

Daylight saving time and the difference

The difference stays 18 hours all year.

Distance

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

More conversions

Honolulu to San MateoSan Mateo to New YorkSan Mateo to LondonSan Mateo to Los AngelesSan Mateo to ChicagoSan Mateo to TorontoSan Mateo to São PauloSan Mateo to ParisSan Mateo to BerlinSan Mateo to MoscowSan Mateo to DubaiSan Mateo to New DelhiSan Mateo to Bangkok
New York to HonoluluLondon to HonoluluLos Angeles to HonoluluChicago to HonoluluToronto to HonoluluSão Paulo to HonoluluParis to HonoluluBerlin to HonoluluMoscow to HonoluluDubai to HonoluluNew Delhi to HonoluluBangkok to Honolulu

Questions and answers

What is the time difference between San Mateo and Honolulu?

Honolulu is 18 hours behind San Mateo.

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

When it is 9:00 AM in San Mateo, it is 3:00 PM (Mon, Oct 19) in Honolulu.

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

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

Does the time difference between San Mateo and Honolulu change?

No. The difference stays 18 hours all year.