HST to NZDT Converter
Need to convert Hawaii Standard Time to New Zealand Daylight Time? NZDT is 23 hours ahead of HST. Edit the time or date below and the NZDT result updates live.
Daylight saving notes
In New Zealand, daylight saving time runs from the first Sunday in October to the first Sunday in April. That affects New Zealand Daylight Time (NZDT).
HST to NZDT conversion chart
For example, a 9:00 AM HST meeting takes place at 8:00 AM NZDT (+1 day). Concretely, when Honolulu (HST) and Auckland (NZDT) set up a call, nZDT is 23 hours ahead of HST.
| HST time | NZDT time |
|---|---|
| 12:00 AM | 11:00 PM |
| 1:00 AM | 12:00 AM+1 day |
| 2:00 AM | 1:00 AM+1 day |
| 3:00 AM | 2:00 AM+1 day |
| 4:00 AM | 3:00 AM+1 day |
| 5:00 AM | 4:00 AM+1 day |
| 6:00 AM | 5:00 AM+1 day |
| 7:00 AM | 6:00 AM+1 day |
| 8:00 AM | 7:00 AM+1 day |
| 9:00 AM | 8:00 AM+1 day |
| 10:00 AM | 9:00 AM+1 day |
| 11:00 AM | 10:00 AM+1 day |
| 12:00 PM | 11:00 AM+1 day |
| 1:00 PM | 12:00 PM+1 day |
| 2:00 PM | 1:00 PM+1 day |
| 3:00 PM | 2:00 PM+1 day |
| 4:00 PM | 3:00 PM+1 day |
| 5:00 PM | 4:00 PM+1 day |
| 6:00 PM | 5:00 PM+1 day |
| 7:00 PM | 6:00 PM+1 day |
| 8:00 PM | 7:00 PM+1 day |
| 9:00 PM | 8:00 PM+1 day |
| 10:00 PM | 9:00 PM+1 day |
| 11:00 PM | 10:00 PM+1 day |
This chart uses the fixed HST and NZDT offsets; the live converter above follows current daylight saving.
Convert HST to NZDT Time Zone
A quick guide to HST → NZDT: the time gap, the live clocks, scheduling tips, and how we keep it accurate.
Converting HST to NZDT, step by step
It takes three quick steps:
- Click the HST field on the left and pick the time you want to convert.
- The matching NZDT time updates on the right automatically — there’s no button to press.
- Need a different day? Click the date field and the result follows, rolling over if it crosses midnight.
HST vs NZDT: what's the time gap?
NZDT is 23 hours ahead of HST. In everyday terms, once you know the time on one side you just add 23 hours to get the other — so a call between Honolulu and Auckland is always 23 hours apart.
What time is it in NZDT right now?
Right now the time in New Zealand Daylight Time (NZDT) is Tuesday, June 30, 2026 · 6:53:57 AM. It ticks every second, so you’re always looking at the live NZDT clock.
What time is it in HST right now?
And in Hawaii Standard Time (HST), it’s currently Monday, June 29, 2026 · 7:53:57 AM. Compare the two and the 23 hours gap is easy to see.
What's the best time for a HST–NZDT call?
For example, a 9:00 AM HST meeting takes place at 8:00 AM NZDT (+1 day). The trick is to aim for a slot that lands inside normal working hours on both sides. Once you’ve found a time, hit Share on the converter to copy a link with the time built in — easy to send to a colleague. Juggling three or more zones? The meeting planner highlights the hours that overlap for everyone.
How does daylight saving affect HST to NZDT?
The labels HST and NZDT are fixed offsets, so the result on this page is always exact. One side switches between standard and summer time while the other stays put, so the real-world gap can shift by an hour for part of the year. It's worth checking which label a region is actually using before you lock in a time.
Why can you trust this HST to NZDT converter?
Every conversion here is calculated from the IANA time zone database — the same source your phone, computer, and browser rely on. Plenty of tools hard-code a single offset, which quietly goes wrong whenever a region changes its rules or flips for daylight saving. We follow the real rules instead, so HST to NZDT stays accurate for today and for any past or future date you type in.
Convert HST to other time zones
- UTC Coordinated Universal Time
- GMT Greenwich Mean Time
- EST Eastern Standard Time
- EDT Eastern Daylight Time
- CST Central Standard Time
- CDT Central Daylight Time
- MST Mountain Standard Time
- MDT Mountain Daylight Time
- PST Pacific Standard Time
- PDT Pacific Daylight Time
- AKST Alaska Standard Time
- AKDT Alaska Daylight Time
- AST Atlantic Standard Time
- ADT Atlantic Daylight Time
- NST Newfoundland Standard Time
- NDT Newfoundland Daylight Time
- BRT Brasília Time
- ART Argentina Time
- WET Western European Time
- WEST Western European Summer Time
- CET Central European Time
- CEST Central European Summer Time
- EET Eastern European Time
- EEST Eastern European Summer Time
- BST British Summer Time
- IST Irish Standard Time
- MSK Moscow Standard Time
- TRT Turkey Time
- WAT West Africa Time
- CAT Central Africa Time
- EAT East Africa Time
- SAST South Africa Standard Time
- GST Gulf Standard Time
- IST Israel Standard Time
- IDT Israel Daylight Time
- IST India Standard Time
- PKT Pakistan Standard Time
- BDT Bangladesh Standard Time
- ICT Indochina Time
- WIB Western Indonesian Time
- WITA Central Indonesian Time
- WIT Eastern Indonesian Time
- CST China Standard Time
- HKT Hong Kong Time
- SGT Singapore Time
- PHT Philippine Time
- JST Japan Standard Time
- KST Korea Standard Time
- AWST Australian Western Standard Time
- ACST Australian Central Standard Time
- ACDT Australian Central Daylight Time
- AEST Australian Eastern Standard Time
- AEDT Australian Eastern Daylight Time
- NZST New Zealand Standard Time
- NZDT New Zealand Daylight Time
Convert to NZDT from other time zones
- UTC Coordinated Universal Time
- GMT Greenwich Mean Time
- EST Eastern Standard Time
- EDT Eastern Daylight Time
- CST Central Standard Time
- CDT Central Daylight Time
- MST Mountain Standard Time
- MDT Mountain Daylight Time
- PST Pacific Standard Time
- PDT Pacific Daylight Time
- AKST Alaska Standard Time
- AKDT Alaska Daylight Time
- HST Hawaii Standard Time
- AST Atlantic Standard Time
- ADT Atlantic Daylight Time
- NST Newfoundland Standard Time
- NDT Newfoundland Daylight Time
- BRT Brasília Time
- ART Argentina Time
- WET Western European Time
- WEST Western European Summer Time
- CET Central European Time
- CEST Central European Summer Time
- EET Eastern European Time
- EEST Eastern European Summer Time
- BST British Summer Time
- IST Irish Standard Time
- MSK Moscow Standard Time
- TRT Turkey Time
- WAT West Africa Time
- CAT Central Africa Time
- EAT East Africa Time
- SAST South Africa Standard Time
- GST Gulf Standard Time
- IST Israel Standard Time
- IDT Israel Daylight Time
- IST India Standard Time
- PKT Pakistan Standard Time
- BDT Bangladesh Standard Time
- ICT Indochina Time
- WIB Western Indonesian Time
- WITA Central Indonesian Time
- WIT Eastern Indonesian Time
- CST China Standard Time
- HKT Hong Kong Time
- SGT Singapore Time
- PHT Philippine Time
- JST Japan Standard Time
- KST Korea Standard Time
- AWST Australian Western Standard Time
- ACST Australian Central Standard Time
- ACDT Australian Central Daylight Time
- AEST Australian Eastern Standard Time
- AEDT Australian Eastern Daylight Time
- NZST New Zealand Standard Time
Frequently asked questions
How many hours ahead of HST is NZDT?
NZDT is 23 hours ahead of HST — a fixed 23 hours difference, since both are fixed-offset labels.
What time is it in NZDT when it's 12:00 PM HST?
When it's 12:00 PM (noon) HST, it's 11:00 AM NZDT the next day.
Do HST or NZDT use daylight saving time?
Hawaii Standard Time (HST) is a fixed offset with no daylight saving; New Zealand Daylight Time (NZDT) observes daylight saving, alternating with NZST.
Why might the real-world HST–NZDT difference change during the year?
The labels HST and NZDT are fixed offsets, so this converter is always exact. But New Zealand Daylight Time's region switches between standard and summer time, so for part of the year you may actually want HST to NZST. Always check which label a region is currently using before you schedule.