Tokyo
Japan
--:-- --
GMT+9 · UTC+9 30 minutes difference
Adelaide
Australia
--:-- --
GMT+10:30 · UTC+9:30 Convert Tokyo (GMT+9) to Adelaide (GMT+10:30) Time — 30 minutes apart
Asia/Tokyo · GMT+9 · UTC+9 | Australia/Adelaide · GMT+10:30 · UTC+9:30 · 30 minutes difference · 601 cities · DST applies
24-Hour Overlap Timeline
✅ Overlap: 9:00 AM–6:00 PM in Tokyo · 9:00 AM–6:00 PM in Adelaide (9h window)
⚠ Adelaide 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 → | ||||||||||||||||||||||||
| 🇯🇵 Tokyo UTC+9 | 9a | 10a | 11a | 12p | 1p | 2p | 3p | 4p | 5p | 6p | 7p | 8p | 9p | 10p | 11p | 12a | 1a | 2a | 3a | 4a | 5a | 6a | 7a | 8a |
| 🇦🇺 Adelaide UTC+9:30 | 9a | 10a | 11a | 12p | 1p | 2p | 3p | 4p | 5p | 6p | 7p | 8p | 9p | 10p | 11p | 12a | 1a | 2a | 3a | 4a | 5a | 6a | 7a | 8a |
Both working Working Off hours Sleeping Now
Key Facts: Tokyo (GMT+9) vs Adelaide (GMT+10:30)
Time Gap
0h 30m
Adelaide ahead
May vary ±1h (DST)
DST Status
✅ Tokyo
No DST
⏰ Adelaide: Observes DST
Cities in GMT+9
600
Largest: Tokyo
37,785,000 pop.
Overlap Window
9h window
9:00 AM – 6:00 PM (GMT+9)
9:00 AM – 6:00 PM (GMT+10:30)
Find Cities in Tokyo & Adelaide Timezones
The GMT+9 and GMT+10:30 timezones are separated by 30 minutes. Tokyo is the largest city in the Asia/Tokyo zone and Adelaide is the largest in Australia/Adelaide. Adelaide observes daylight saving time — the difference may change by 1 hour seasonally. For scheduling between these regions, the key fact is: there are 9 hours of mutual business-hours overlap each day.
Best Times to Schedule Calls: Tokyo (GMT+9) ↔ Adelaide (GMT+10:30)
| Tokyo (GMT+9) | Adelaide (GMT+10:30) | Quality |
|---|---|---|
| 6:00 AM | 6:00 AM | ❌ |
| 7:00 AM | 7:00 AM | ⚠️ |
| 8:00 AM | 8:00 AM | ⚠️ |
| 9:00 AM | 9:00 AM | ✅ |
| 10:00 AM | 10:00 AM | ✅ |
| 11:00 AM | 11:00 AM | ✅ |
| 12:00 PM | 12:00 PM | ✅ |
| 1:00 PM | 1:00 PM | ✅ |
| 2:00 PM | 2:00 PM | ✅ |
| 3:00 PM | 3:00 PM | ✅ |
| 4:00 PM | 4:00 PM | ✅ |
| 5:00 PM | 5:00 PM | ✅ |
| 6:00 PM | 6:00 PM | ⚠️ |
| 7:00 PM | 7:00 PM | ⚠️ |
| 8:00 PM | 8:00 PM | ❌ |
| 9:00 PM | 9:00 PM | ❌ |
Work hours defined as 09:00–18:00 local time. ✅ Both in work hours ⚠️ Borderline ❌ Outside work hours.
GMT+9 to GMT+10:30: Complete 24-Hour Time Conversion Table
| Tokyo (GMT+9) | Adelaide (GMT+10:30) | IST (UTC+5:30) |
|---|---|---|
| 12:00 AM | 12:30 AM | 8:30 PM |
| 1:00 AM | 1:30 AM | 9:30 PM |
| 2:00 AM | 2:30 AM | 10:30 PM |
| 3:00 AM | 3:30 AM | 11:30 PM |
| 4:00 AM | 4:30 AM | 12:30 AM |
| 5:00 AM | 5:30 AM | 1:30 AM |
| 6:00 AM | 6:30 AM | 2:30 AM |
| 7:00 AM | 7:30 AM | 3:30 AM |
| 8:00 AM | 8:30 AM | 4:30 AM |
| 9:00 AM | 9:30 AM | 5:30 AM |
| 10:00 AM | 10:30 AM | 6:30 AM |
| 11:00 AM | 11:30 AM | 7:30 AM |
| 12:00 PM | 12:30 PM | 8:30 AM |
| 1:00 PM | 1:30 PM | 9:30 AM |
| 2:00 PM | 2:30 PM | 10:30 AM |
| 3:00 PM | 3:30 PM | 11:30 AM |
| 4:00 PM | 4:30 PM | 12:30 PM |
| 5:00 PM | 5:30 PM | 1:30 PM |
| 6:00 PM | 6:30 PM | 2:30 PM |
| 7:00 PM | 7:30 PM | 3:30 PM |
| 8:00 PM | 8:30 PM | 4:30 PM |
| 9:00 PM | 9:30 PM | 5:30 PM |
| 10:00 PM | 10:30 PM | 6:30 PM |
| 11:00 PM | 11:30 PM | 7:30 PM |
IST (India Standard Time, UTC+5:30) shown as reference for Indian users. +1/−1 indicates a different calendar day.
600 Cities in Tokyo (GMT+9) & 1 Cities in Adelaide (GMT+10:30) — Page 1 of 3
Tokyo & 599 more — Tokyo (GMT+9, UTC+9)
- Tokyo, JP 37.8M
- Seoul, KR 23.0M
- Osaka, JP 15.1M
- Nagoya, JP 9.2M
- Yokohama, JP 3.8M
- Busan, KR 3.5M
- Incheon, KR 2.9M
- Pyongyang, KP 2.9M
- Daegu, KR 2.4M
- Fukuoka, JP 2.3M
- Sapporo, JP 2.0M
- Kawasaki, JP 1.5M
- Kobe, JP 1.5M
- Gwangju, KR 1.5M
- Daejeon, KR 1.5M
Kyoto, JPSaitama, JPSuwon, KRHiroshima, JPUlsan, KRTongjin, KRGoyang, KRSendai, JPChangwon, KRChiba, JPHwasu-dong, KRSetagaya, JPKitakyushu, JPSongnam, KRCheongju, KRSakai, JPNiigata, JPHamamatsu, JPBucheon, KRHamhung, KPNerima, JPOta-ku, JPKumamoto, JPYanggok, KRSagamihara, JPOkayama, JPNampo, KPEdogawa, JPShizuoka, JPAdachi, JPCh'ongjin, KPCh'onan, KRHoncho, JPAnsan, KRKawaguchi, JPKagoshima, JPItabashi, JPSuginami-ku, JPHachioji, JPKimhae, KRHimeji, JPKoto-ku, JPUtsunomiya, JPMatsuyama, JPPohang, KRMatsudo, JPIchikawa, JPHigashi-osaka, JPNishinomiya-hama, JPKawachicho, JPKurashiki, JPOita, JPKanazawa, JPFukuyama, JPPyeongtaek, KRAmagasaki, JPKatsushika-ku, JPFujisawa, JPSunch'on, KPJeju, KRMachida, JPKashiwa, JPAomori, JPSihung, KRToyota, JPUijeongbu, KRTakamatsu, JPShinagawa-ku, JPPaju, KRJayapura, IDToyama, JPKumi, KRNagasaki, JPGifu, JPToyonaka, JPMiyazaki, JPHirakata, JPOkazaki, JPMinamisuita, JPIchinomiya, JPTakasaki, JPAmbon, IDToyohashi, JPNagano, JPWonsan, KPKawagoe, JPWakayama, JPKita-ku, JPGimpo, KRNara, JPSinuiju, KPShinjuku, JPTakatsuki, JPTanch'on, KPNakano, JPOtsu, JPKoshigaya, JPJeonju, KRTokorozawa, JPChinju, KRIwaki, JPChita, RUAsan, KRMaebashi, JPAsahikawa, JPWonju, KRKoriyama, JPKochi, JPKaech'on, KPGwangmyeongni, KRNaha, JPYakutsk, RUYokkaichi, JPSariwon, KPKasugai, JPAkita, JPKurume, JPOakashicho, JPToshima, JPYangsan, KRSorong, IDMorioka, JPMeguro, JPFukushima, JPIbaraki, JPChuncheon, KRGyeongsan, KRKunsan, KRYeosu, KRTsu, JPSumida, JPIksan, KRMito, JPKunp'o, KRIchihara, JPNagaoka, JPSuncheon, KRYao, JPFukui, JPFuchu, JPMinato, JPHiratsuka, JPKakogawacho-honmachi, JPTokushima, JPShinozaki, JPKanggye, KPHakodate, JPSoka, JPKyongju, KRYamagata, JPTsukuba-kenkyugakuen-toshi, JPFuji, JPSasebo, JPChigasaki, JPHaeju, KPAnju, KPBunkyo-ku, JPYato, JPMatsumoto, JPChofugaoka, JPP'yongsong-si, KPShibuya-ku, JPAnyang, KRSaga, JPYoshiicho-shimobaru, JPKasukabe, JPNeya, JPAgeoshimo, JPOta, JPAtsugicho, JPHachinohe, JPDili, TLTakarazuka, JPArakawa, JPMokpo, KROsan, KRIsesaki, JPKure, JPNagareyama, JPTaito, JPGangneung, KRIch'on, KRChungju, KRNishitokyo, JPTernate, ID
Adelaide & cities — Adelaide (GMT+10:30, UTC+9:30)
- Adelaide, AU 1.4M
⚠️ Daylight Saving Time Affects This Pair
| Timezone | DST? | Standard | Daylight |
|---|---|---|---|
| Asia/Tokyo | No | UTC+9 | — |
| Australia/Adelaide | Yes | UTC+9:30 | UTC+10.5 |
During DST periods the time difference between these zones may be 1 hour 30 minutes instead of 30 minutes. Always verify the current offset if scheduling calls near clock-change dates.