Does it handle Daylight Saving Time?

Yes, the tool automatically adjusts for Daylight Saving Time based on the specific date you select, ensuring accurate conversions year-round.

Can I add multiple cities?

Yes, you can add as many cities as you need to the dashboard to compare times across your entire global network simultaneously.

HST to Nigeria

+11h

HST

HSTSOURCE

UTC-10:00

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Nigeria

WAT

UTC+01:00

HH11

MM00

23:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

HST

Nigeria

12:00 AM

11:00 AM

2:00 AM

1:00 PM

4:00 AM

3:00 PM

6:00 AM

5:00 PM

8:00 AM

7:00 PM

10:00 AM

9:00 PM

12:00 PM

11:00 PM

2:00 PM

1:00 AM+1

4:00 PM

3:00 AM+1

6:00 PM

5:00 AM+1

8:00 PM

7:00 AM+1

10:00 PM

9:00 AM+1

Green rows indicate typical business hours (9 AM - 5 PM)

HST and WAT on the World Map

The map below highlights the HST (Hawaii Standard Time) and WAT (West Africa Time) timezone regions across the globe.

HST Zone

→

WAT Zone

Explore all world timezones interactively →

HST – Hawaii Standard Time

UTC-10:00

Hawaii Standard Time (HST) is the time zone for the Hawaiian Islands, 10 hours behind UTC.

Countries in HST

United States (Hawaii)

Major Cities in HST

HonoluluHiloKailuaPearl CityKapolei

Key Facts about HST

•Hawaii does not observe daylight saving time.
•HST is 5 hours behind EST in winter and 6 hours behind EDT in summer.
•Hawaii is one of only two US states that don't observe DST (the other is Arizona).

Daylight Saving:No – UTC-10:00 year-round

Learn more about HST on Wikipedia

WAT – West Africa Time

UTC+01:00

West Africa Time (WAT) is the time zone for West and Central Africa, 1 hour ahead of UTC.

Countries in WAT

NigeriaCameroonChadCongoAngolaNigerGabonEquatorial Guinea

Major Cities in WAT

LagosAbujaDoualaYaoundéLuandaKinshasaBrazzaville

Key Facts about WAT

•Lagos, Nigeria is the most populous city in Africa.
•WAT is the same offset as CET (UTC+01:00).
•Nigeria does not observe daylight saving time.

Daylight Saving:No – UTC+01:00 year-round

Learn more about WAT on Wikipedia

HST vs Nigeria: Offsets, DST and Best Call Times

HST runs on Hawaii Standard Time (HST) at UTC-10:00. Nigeria runs on West Africa Time (WAT) at UTC+01:00. That puts HST 11 hours ahead of Nigeria — a difference of +11h at the current offsets.

In practice, when it is 9:00 AM in HST it is 8:00 PM in Nigeria. Midnight in HST is 11:00 AM in Nigeria. Neither zone observes daylight saving time, so the offset between them stays constant all year.

HST to Nigeria time conversion table

HST (HST)	Nigeria (WAT)	Day
12:00 AM	11:00 AM	same day
6:00 AM	5:00 PM	same day
7:00 AM	6:00 PM	same day
8:00 AM	7:00 PM	same day
9:00 AM	8:00 PM	same day
12:00 PM	11:00 PM	same day
3:00 PM	2:00 AM	next day
5:00 PM	4:00 AM	next day
6:00 PM	5:00 AM	next day
9:00 PM	8:00 AM	next day

Why people convert HST to Nigeria time

Scheduling a call from HST to Nigeria: a 10:00 AM start in HST lands at 9:00 PM in Nigeria, so you can confirm the slot without doing the arithmetic yourself.
Handling a +11h gap: HST and Nigeria have no overlap inside a normal 9-to-5 day, so real-time meetings need an early-morning or late-evening slot on one side. 9:00 AM in Nigeria is 8:00 PM in HST.
Booking travel or deliveries: tracking Nigeria local time against HST keeps pickup windows and arrival estimates honest across the +11h offset.

Always state the zone abbreviation, not just the hour. "3:00 PM HST" is unambiguous; "3 PM" across a +11h gap is not.
With a +11h gap there is no shared 9-to-5 window, so alternate the early start: one week HST takes the early slot, the next week Nigeria does.

About HST (Hawaii Standard Time)

Hawaii Standard Time (HST) is used in the state of Hawaii and does not observe daylight saving time. This makes HST one of the most consistent time zones in the US. The Hawaiian Islands are among the last places on Earth to see a new calendar day.

About WAT (West Africa Time)

West Africa Time (WAT) is used across much of West and Central Africa, including Nigeria, the most populous country in Africa. WAT does not observe daylight saving time and shares the same offset as Central European Time (CET).

Best time to call between HST and Nigeria

With a +11h offset there is no overlap inside a normal 9 AM – 5 PM day. Nigeria opens at 9:00 AM WAT, which is 8:00 PM in HST, so real-time calls need an early-morning or late-evening slot on one side.

Business hours overlap

HST and Nigeria have no shared working hours because of the +11h gap. Teams need to alternate early starts or rely on asynchronous handovers.

HST is 11 hours ahead of Nigeria (HST UTC-10:00 → WAT UTC+01:00). There is no shared 9-to-5 window, so plan around an early or late slot. Remember to re-check around daylight-saving transitions.

Learn More About Time

Dive deeper into the fascinating world of timekeeping, time zones, and how they shape our global society:

⏳

History of Timekeeping

From sundials to atomic clocks - 5000 years of measuring time

🌍

How Time Zones Work

UTC, offsets, and why zones don't follow straight lines

☀️

Daylight Saving Time

DST dates, which countries observe it, and the ongoing debate

Frequently Asked Questions

What is the time difference between HST and Nigeria?

HST (HST, UTC-10:00) is 11 hours ahead of Nigeria (WAT, UTC+01:00). The gap is currently +11h.

How do I convert HST time to Nigeria time?

Add +11h to HST local time. For example, 9:00 AM in HST is 8:00 PM in Nigeria.

What time is it in Nigeria right now?

Nigeria uses WAT at UTC+01:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +11h offset from HST.