India Standard Time
IST means UTC+05:30 throughout the year.
Other meanings: Israel Standard Time · Irish Standard Time.
TIME ZONE CONVERTER
Adelaide to IST
Time Converter
Convert Adelaide, Australia to India Standard Time. Compare dates, seasonal differences and meeting hours.
Adelaide is 4h or 5h ahead of IST in 2026, depending on the date.
9 AM Adelaide = 4 AM IST
Selected date: November 4, 2026. Fixed abbreviations retain their stated UTC offsets.
THE QUICK REFERENCE
CSVAdelaide to IST conversion table
November 4, 2026 · Date changes are marked.
View the full 24-hour table
| Adelaide | IST |
|---|---|
| 12:00 AM | 7:00 PM -1 day |
| 1:00 AM | 8:00 PM -1 day |
| 2:00 AM | 9:00 PM -1 day |
| 3:00 AM | 10:00 PM -1 day |
| 4:00 AM | 11:00 PM -1 day |
| 5:00 AM | 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 |
| Adelaide | IST |
|---|---|
| 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 |
Starting with the IST working day
These examples start on 2026-11-04 in IST.
09:00 IST14:00 →Adelaide · 2026-11-04
17:00 IST22:00 →Adelaide · 2026-11-04
Which time-zone meaning are we using?
ONE CLOCK TIME. THE WHOLE YEAR.
Year CSV09:00 Adelaide to IST throughout 2026
Keeping 09:00 on the Adelaide clock produces 2 different destination clock/date answers in 2026. The ranges below use Adelaide calendar dates, including transition days.
| Dates in Adelaide · 2026 | IST answer | Source → destination offsets | Explore |
|---|---|---|---|
| Jan 1 – Apr 494 dates | 04:00Same date | UTC+10:30 → UTC+05:30 | |
| Apr 5 – Oct 3182 dates | 05:00Same date | UTC+09:30 → UTC+05:30 | |
| Oct 4 – Dec 3189 dates | 04:00Same date | UTC+10:30 → UTC+05:30 |
Every calendar date is included, not just workdays. Date ranges include both endpoints. Based on IANA 2026e; future rules may change.
DON’T LOSE A DAY
When does Adelaide time become a different date in IST?
Your complete source day: 2026-11-04. Each range shows which destination date to use.
Adelaide · 2026-11-0400:00–05:00UTC+10:30
IST · 2026-11-0319:00–24:00UTC+05:30 Previous day
Adelaide · 2026-11-0405:00–24:00UTC+10:30
IST · 2026-11-0400:00–19:00UTC+05:30 Same date
Range starts are included; ends are excluded. 24:00 means midnight at the end of that date. Repeated hours appear separately with their UTC offsets. The strip is proportional to elapsed time.
THE BIGGER PICTURE
2026A year of time differences.
How IST compares with Adelaide throughout 2026.
JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDEC
−5h
−4h
−5h
Adelaide changes its UTC offset in 2026. IST is a fixed offset.
See exact change periods
| From (UTC, inclusive) | Until (UTC, exclusive) | IST vs Adelaide |
|---|---|---|
| 1 Jan 2026, 00:00 UTC | 4 Apr 2026, 16:30 UTC | 5h behind |
| 4 Apr 2026, 16:30 UTC | 3 Oct 2026, 16:30 UTC | 4h behind |
| 3 Oct 2026, 16:30 UTC | 1 Jan 2027, 00:00 UTC | 5h behind |
CLOCK CHANGES
What changes at the next clock adjustment?
Exact periods outside the most common difference in 2026
The most frequent difference has IST 5h behind relative to Adelaide. Exceptions:
| From (UTC, inclusive) | Until (UTC, exclusive) | Compared with Adelaide |
|---|---|---|
| 4 Apr 2026, 16:30 UTC | 3 Oct 2026, 16:30 UTC | 4h behind |
PLAN BEYOND A SINGLE DAY
Daily CSVAdelaide–IST working hours through 2026
Every date calculated with your working windows. 261 selected Adelaide workdays; public holidays are not applied.
Least shared time3h
Most common3h
Most shared time4h
Days without a 60-min slot0 / 261
A start time that survives the whole year.
Start a 60-minute meeting in Adelaide 14:00–16:00.
These starts fit both working windows on every selected Adelaide workday in 2026, using a 15-minute start grid. The end of each range is the last valid start.
Adelaide: 09:00–17:00, Mon, Tue, Wed, Thu, Fri. IST: 09:00–17:00, Mon, Tue, Wed, Thu, Fri.
Calculation details and repeated hours
Overnight shifts belong to their start weekday. Host workday means the source calendar date. Repeated local times use the first occurrence.
THE DETAILS THAT MATTER
Adelaide to IST: useful answers
Why is the Adelaide to IST difference sometimes 4 hours and sometimes 5 hours?
Adelaide is 4h or 5h ahead of IST in 2026, depending on the date. Adelaide changes its UTC offset in 2026. IST is a fixed offset.
Does the Adelaide–IST time difference change in 2026?
The published rules produce 3 periods with 2 different offsets in 2026. See the annual chart for the exact boundaries of each period.
Does this conversion change the calendar date?
09:00 in Adelaide on 2026-11-04 is 04:00 in IST on 2026-11-04. This selected time stays on the same date in both places. Other times can cross midnight.
Can Adelaide and IST meet during working hours?
Your selected working windows share 3h on 2026-11-04. The planner above checks the whole meeting duration and shows suitable start times. Edit the windows to match your team.
Calculated with IANA 2026e. Working hours are your preferences; public holidays and calendar availability are not included. Our methodology