What is the time difference between Tehran and Sydney?

Sydney is 6 hours 30 minutes ahead of Tehran during standard time. This may change by up to 1 hour when daylight saving time is active.

When is the best time to schedule a call between Tehran and Sydney?

The best times to connect are 9:00 AM GMT+3:30, 10:00 AM GMT+3:30, 11:00 AM GMT+3:30, when both regions are within standard business hours.

Tehran to Melbourne Time Converter — GMT+3:30 to GMT+11, 6 hours 30 minutes difference

24-Hour Overlap Timeline

✅ Overlap: 9:00 AM–11:00 AM in Tehran · 4:00 PM–6:00 PM in Melbourne (2h window)

⚠ Sydney observes daylight saving time — offset may vary by up to 1 hour seasonally

	0	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23
UTC →
🇮🇷 Tehran UTC+3:30	3a	4a	5a	6a	7a	8a	9a	10a	11a	12p	1p	2p	3p	4p	5p	6p	7p	8p	9p	10p	11p	12a	1a	2a
🇦🇺 Melbourne UTC+10	10a	11a	12p	1p	2p	3p	4p	5p	6p	7p	8p	9p	10p	11p	12a	1a	2a	3a	4a	5a	6a	7a	8a	9a
🇮🇳 India (IST) UTC+5:30	5a	6a	7a	8a	9a	10a	11a	12p	1p	2p	3p	4p	5p	6p	7p	8p	9p	10p	11p	12a	1a	2a	3a	4a

Both working Working Off hours Sleeping Now

Key Facts: Tehran (GMT+3:30) vs Melbourne (GMT+11)

Time Gap

6h 30m

Sydney ahead

May vary ±1h (DST)

DST Status

✅ Tehran

No DST

⏰ Sydney: Observes DST

Cities in GMT+3:30

163

Largest: Tehran

14,148,000 pop.

Overlap Window

3h window

9:00 AM – 12:00 PM (GMT+3:30)

3:00 PM – 6:00 PM (GMT+11)

Find Cities in Tehran & Sydney Timezones

The GMT+3:30 and GMT+11 timezones are separated by 6 hours 30 minutes. Tehran is the largest city in the Asia/Tehran zone and Melbourne is the largest in Australia/Sydney. Sydney observes daylight saving time — the difference may change by 1 hour seasonally. For scheduling between these regions, the key fact is: there are 3 hours of mutual business-hours overlap each day.

Best Times to Schedule Calls: Tehran (GMT+3:30) ↔ Melbourne (GMT+11)

Tehran (GMT+3:30)	Sydney (GMT+11)	Quality
12:00 AM	6:00 AM	❌
1:00 AM	7:00 AM	❌
2:00 AM	8:00 AM	❌
3:00 AM	9:00 AM	❌
4:00 AM	10:00 AM	❌
5:00 AM	11:00 AM	❌
6:00 AM	12:00 PM	❌
7:00 AM	1:00 PM	⚠️
8:00 AM	2:00 PM	⚠️
9:00 AM	3:00 PM	✅
10:00 AM	4:00 PM	✅
11:00 AM	5:00 PM	✅
12:00 PM	6:00 PM	⚠️
1:00 PM	7:00 PM	⚠️
2:00 PM	8:00 PM	❌
3:00 PM	9:00 PM	❌
4:00 PM	10:00 PM	❌
5:00 PM	11:00 PM	❌
6:00 PM	12:00 AM +1 day	❌
7:00 PM	1:00 AM +1 day	❌
8:00 PM	2:00 AM +1 day	❌
9:00 PM	3:00 AM +1 day	❌

Work hours defined as 09:00–18:00 local time. ✅ Both in work hours ⚠️ Borderline ❌ Outside work hours.

GMT+3:30 to GMT+11: Complete 24-Hour Time Conversion Table

Tehran (GMT+3:30)	Sydney (GMT+11)	IST (UTC+5:30)
12:00 AM	6:30 AM	2:00 AM
1:00 AM	7:30 AM	3:00 AM
2:00 AM	8:30 AM	4:00 AM
3:00 AM	9:30 AM	5:00 AM
4:00 AM	10:30 AM	6:00 AM
5:00 AM	11:30 AM	7:00 AM
6:00 AM	12:30 PM	8:00 AM
7:00 AM	1:30 PM	9:00 AM
8:00 AM	2:30 PM	10:00 AM
9:00 AM	3:30 PM	11:00 AM
10:00 AM	4:30 PM	12:00 PM
11:00 AM	5:30 PM	1:00 PM
12:00 PM	6:30 PM	2:00 PM
1:00 PM	7:30 PM	3:00 PM
2:00 PM	8:30 PM	4:00 PM
3:00 PM	9:30 PM	5:00 PM
4:00 PM	10:30 PM	6:00 PM
5:00 PM	11:30 PM	7:00 PM
← Date changes in Sydney →
6:00 PM	12:30 AM +1	8:00 PM
7:00 PM	1:30 AM +1	9:00 PM
8:00 PM	2:30 AM +1	10:00 PM
9:00 PM	3:30 AM +1	11:00 PM
10:00 PM	4:30 AM +1	12:00 AM
11:00 PM	5:30 AM +1	1:00 AM

IST (India Standard Time, UTC+5:30) shown as reference for Indian users. +1/−1 indicates a different calendar day.

163 Cities in Tehran (GMT+3:30) & 13 Cities in Sydney (GMT+11)

Tehran & 162 more — Tehran (GMT+3:30, UTC+3:30)

Hamadan, IR Yazd, IR Ardabil, IR Bandar `Abbas, IR Arak, IR Eslamshahr, IR Sanandaj, IR Qazvin, IR Zanjan, IR Gorgan, IR Shahriar, IR Shahr-e Qods, IR Kashan, IR Malard, IR Maragheh, IR Sarta, IR Dezful, IR Babol, IR Qa'em Shahr, IR Khomeyni Shahr, IR Sabzevar, IR Andimeshk, IR Amol, IR Pakdasht, IR Najafabad, IR Borujerd, IR Madan, IR Qarchak, IR Bojnurd, IR Varamin, IR Bandar-e Bushehr, IR Neyshabur, IR Saveh, IR Birjand, IR Nasim Shahr, IR Khorramabad, IR Khowy, IR Bukan, IR Shahr-e Kord, IR Semnan, IR Fardis, IR Sirjan, IR Shahin Shahr, IR Malayer, IR Mahabad, IR Saqqez, IR Shahrud, IR Khodabandeh, IR Bandar-e Mahshahr, IR Rafsanjan, IR Borazjan, IR Gonbad-e Kavus, IR Marvdasht, IR Quchan, IR Jahrom, IR Kamalshahr, IR Torbat-e Heydariyeh, IR Marivan, IR Shahreza, IR Zabol, IR Khorramshahr, IR Marand, IR Jiroft, IR Salmas, IR Bam, IR Behbahan, IR Dorud, IR Nazarabad, IR Mohammad Shahr, IR Bandar-e Anzali, IR Iranshahr, IR Fasa, IR Baneh, IR Yasuj, IR Chabahar, IR Robat Karim, IR Kashmar, IR Shushtar, IR Ahar, IR Masjed Soleyman, IR Torbat-e Jam, IR Abhar, IR Mianeh, IR Do Gonbadan, IR Kazerun, IR Behshahr, IR Alvand, IR Piranshahr, IR Eslamabad-e Gharb, IR Kuhdasht, IR Fulad Shahr, IR Khowrasgan, IR Tajrish, IR Shirvan, IR Meybod, IR Takestan, IR Langarud, IR Bumahen, IR Baharestan, IR Aligudarz, IR Bandar-e Emam Khomeyni, IR Bandar Emam, IR Qorveh, IR Shush, IR Nahavand, IR Bonab, IR Ardakan, IR Ramhormoz, IR Meshgin Shahr, IR Bandar-e Genaveh, IR Naqadeh, IR Khomeyn, IR Omidiyeh, IR Aran Bidgol, IR Baqershahr, IR Mahdasht, IR Mobarakeh, IR Meshkin Dasht, IR Neka, IR Kangan, IR Abyek, IR Saravan, IR Babolsar, IR Esfarayen, IR Damghan, IR Zarand, IR Borujen, IR Dehdasht, IR Khash, IR Taybad, IR Kut-e `Abdollah, IR Zarrin Shahr, IR Asadabad, IR Hashtgerd, IR Tonekabon, IR Khorramdarreh, IR Eqbaliyeh, IR Javanrud, IR Hashtpar, IR Sefrou, MA Sabbashahr, IR Bandar-e Torkaman, IR Chenaran, IR Bijar, IR `Aliabad-e Katul, IR Kahnuj, IR Susangerd, IR Tuyserkan, IR

Melbourne & 12 more — Sydney (GMT+11, UTC+10)

⚠️ Daylight Saving Time Affects This Pair

Timezone	DST?	Standard	Daylight
Asia/Tehran	No	UTC+3:30	—
Australia/Sydney	Yes	UTC+10	UTC+11

During DST periods the time difference between these zones may be 7 hours 30 minutes instead of 6 hours 30 minutes. Always verify the current offset if scheduling calls near clock-change dates.

Convert Tehran (GMT+3:30) to Melbourne (GMT+11) Time — 6 hours 30 minutes apart