Iran to Taiwan
+4h 30mIran
IRSTSOURCETaiwan
CSTGreen rows indicate typical business hours (9 AM - 5 PM)
IRST and CST on the World Map
The map below highlights the IRST (Iran Standard Time) and CST (China Standard Time) timezone regions across the globe.
IRST – Iran Standard Time
UTC+03:30Iran Standard Time (IRST) is the time zone for Iran, 3 hours and 30 minutes ahead of UTC.
- •IRST is one of only a few time zones with a 30-minute offset.
- •Iran observes daylight saving time, switching to IRDT (UTC+04:30).
- •Tehran has a metropolitan population of over 16 million.
CST – China Standard Time
UTC+08:00China Standard Time (CST) covers all of mainland China, 8 hours ahead of UTC.
- •China uses a single time zone despite spanning 5 geographical zones.
- •In Xinjiang (western China), sunset can be as late as midnight in summer.
- •China abolished daylight saving time in 1991.
- •The Shanghai Stock Exchange operates on CST/Beijing Time.
Iran vs Taiwan: Offsets, DST and Best Call Times
Iran runs on Iran Standard Time (IRST) at UTC+03:30. Taiwan runs on Taiwan Standard Time (CST) at UTC+08:00. That puts Iran 4 hours 30 minutes ahead of Taiwan — a difference of +4h 30m at the current offsets.
In practice, when it is 9:00 AM in Iran it is 1:30 PM in Taiwan. Midnight in Iran is 4:30 AM in Taiwan. Neither zone observes daylight saving time, so the offset between them stays constant all year.
Iran to Taiwan time conversion table
| Iran (IRST) | Taiwan (CST) | Day |
|---|---|---|
| 12:00 AM | 4:30 AM | same day |
| 6:00 AM | 10:30 AM | same day |
| 7:00 AM | 11:30 AM | same day |
| 8:00 AM | 12:30 PM | same day |
| 9:00 AM | 1:30 PM | same day |
| 12:00 PM | 4:30 PM | same day |
| 3:00 PM | 7:30 PM | same day |
| 5:00 PM | 9:30 PM | same day |
| 6:00 PM | 10:30 PM | same day |
| 9:00 PM | 1:30 AM | next day |
Why people convert Iran to Taiwan time
- Scheduling a call from Iran to Taiwan: a 10:00 AM start in Iran lands at 2:30 PM in Taiwan, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both Iran and Taiwan are inside the 9-to-5 working day between 9:00 AM and 12:30 PM IRST time (1:30 PM–5:00 PM CST). That is roughly 3 hours 30 minutes of usable overlap.
- Watching a live event or market open: Iran viewers need 1:30 PM in Taiwan to catch a 9:00 AM start there, and 7:30 PM if the event is anchored to Iran.
- Always state the zone abbreviation, not just the hour. "3:00 PM IRST" is unambiguous; "3 PM" across a +4h 30m gap is not.
- Block 9:00 AM–12:30 PM IRST as the recurring meeting window if you work primarily from Iran and need Taiwan colleagues present.
About IRST (Iran Standard Time)
Iran Standard Time (IRST) is one of the few time zones with a 30-minute offset. Iran observes daylight saving time (IRDT, UTC+04:30) from late March to late September. Tehran, the capital, is one of the largest cities in the Middle East.
About CST (China Standard Time)
China Standard Time (CST, also known as Beijing Time) is used across all of mainland China despite the country spanning five geographical time zones. This single-timezone policy was adopted in 1949. China does not observe daylight saving time. CST is shared with Hong Kong (HKT), Macau, Taiwan, Singapore, Malaysia, and the Philippines, making UTC+08:00 one of the most used offsets in the world.
Best time to call between Iran and Taiwan
Both Iran and Taiwan sit inside the 9 AM – 5 PM working day between 9:00 AM–12:30 PM IRST, which is 1:30 PM–5:00 PM CST. That gives roughly 3 hours and 30 minutes of shared time — the safest window for a live call or meeting.
Business hours overlap
Iran and Taiwan overlap for about 3 hours during the working day — enough for meetings if you avoid the edges of the window.
Iran is 4 hours 30 minutes ahead of Taiwan (IRST UTC+03:30 → CST UTC+08:00). The shared working window is 9:00 AM–12:30 PM IRST. 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:
Frequently Asked Questions
What is the time difference between Iran and Taiwan?
Iran (IRST, UTC+03:30) is 4 hours 30 minutes ahead of Taiwan (CST, UTC+08:00). The gap is currently +4h 30m.
How do I convert Iran time to Taiwan time?
Add +4h 30m to Iran local time. For example, 9:00 AM in Iran is 1:30 PM in Taiwan.
What time is it in Taiwan right now?
Taiwan uses CST at UTC+08:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +4h 30m offset from Iran.
What is the best time to call Taiwan from Iran?
Call between 9:00 AM and 12:30 PM IRST — that maps to 1:30 PM–5:00 PM CST and keeps both parties inside the working day.
Which is ahead, Iran or Taiwan?
Iran is 4 hours 30 minutes ahead of Taiwan. When it is 12:00 PM in Iran it is 4:30 PM in Taiwan.
Do Iran and Taiwan use different time zones?
Iran (Iran) uses IRST at UTC+03:30, while Taiwan (Taiwan) uses CST at UTC+08:00. The IANA identifiers are Asia/Tehran and Asia/Taipei.
Does daylight saving time affect the Iran–Taiwan difference?
Neither zone observes daylight saving time, so the +4h 30m offset between Iran and Taiwan is fixed all year.
Which other cities share Iran's time zone?
IRST also covers Tehran, Isfahan, Mashhad, Tabriz, Shiraz, Karaj.
Which countries use IRST, Iran's zone?
IRST is used in Iran.
Is there a day difference between Iran and Taiwan?
Not normally. The +4h 30m gap only pushes the date over for late-evening times.
What is the time difference between Iran and Taiwan?
Taiwan is +4h 30m from Iran.
What timezone is Iran in?
Iran operates on its local timezone.
What timezone is Taiwan in?
Taiwan operates on its local timezone.
Which countries use IRST (Iran Standard Time)?
IRST is used in Iran.
Does IRST observe daylight saving time?
Yes, IRST switches to IRDT during summer months.
What are some interesting facts about IRST?
IRST is one of only a few time zones with a 30-minute offset. Iran observes daylight saving time, switching to IRDT (UTC+04:30).
Which cities are in the CST timezone?
Major cities in the CST timezone include Shanghai, Beijing, Shenzhen, Guangzhou, Chengdu, Hong Kong, Taipei, Wuhan.
What is the UTC offset for CST?
China Standard Time (CST) is at UTC+08:00.
What should I know about the CST timezone?
China uses a single time zone despite spanning 5 geographical zones. In Xinjiang (western China), sunset can be as late as midnight in summer.
When is it midnight in Iran, what time is it in Taiwan?
When it is 12:00 AM (midnight) in Iran (IRST), it is +4h 30m later in Taiwan (CST).
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