Koshu to Honolulu time converter

Honolulu is 19 hours behind Koshu. When it is 9:00 AM in Koshu, it is 2:00 PM (Mon, Oct 19) in Honolulu.

Koshu JST

Tuesday, October 20, 2026

Honolulu HST

Monday, October 19, 2026

Koshu
Japan
Tue, Oct 20
JSTUTC+9
Honolulu
Hawaii, United States
Mon, Oct 19
HSTUTC-10-19h
Finding your time zone…
Shared working hours (9:00–18:00)

Koshu to Honolulu conversion table

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

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

Best time to call or meet

Both sides are at work from 9:00 AM – 1:00 PM in Koshu (2:00 PM – 6:00 PM in Honolulu).

Daylight saving time and the difference

The difference stays 19 hours all year.

Distance

Koshu and Honolulu are 6,288 km (3,907 miles) apart in a straight line.

More conversions

Honolulu to KoshuKoshu to New YorkKoshu to LondonKoshu to Los AngelesKoshu to ChicagoKoshu to TorontoKoshu to São PauloKoshu to ParisKoshu to BerlinKoshu to MoscowKoshu to DubaiKoshu to New DelhiKoshu 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 Koshu and Honolulu?

Honolulu is 19 hours behind Koshu.

What time is it in Honolulu when it is 9 AM in Koshu?

When it is 9:00 AM in Koshu, it is 2:00 PM (Mon, Oct 19) in Honolulu.

When is the best time to call Honolulu from Koshu?

Both sides are at work from 9:00 AM – 1:00 PM in Koshu (2:00 PM – 6:00 PM in Honolulu).

Does the time difference between Koshu and Honolulu change?

No. The difference stays 19 hours all year.