🇮🇳 India
IST · UTC+5:30
7:32 PM
UTC+05:30
🕐 IST to CDT Converter
Convert India Standard Time (IST) to Central Daylight Time (CDT). IST is 10 hours 30 minutes ahead of CDT (UTC−5). Enter a time below, or scan the hour-by-hour grid and table.
Quick answer: IST is 10 hours 30 minutes ahead of CDT (UTC−5). Example: 9:00 PM IST is 10:30 AM CDT.
If Central is on CST
9:30 PMCST
(previous day)
If Central is on CDT
10:30 PMCDT
(previous day)
Hour by hour: India vs Chicago
🇺🇸 Chicago
Central Time (CST/CDT)
9:02 AM
UTC-05:00
Dark = night · Light = morning/evening · Green = working hours (9–6) · Hatched = weekend. Click an hour to compare the same moment across rows.
IST to CDT conversion table
| IST (India) | CDT (UTC−5, summer) |
|---|---|
| 12:00 AM | 1:30 PM (previous day) |
| 12:30 AM | 2:00 PM (previous day) |
| 1:00 AM | 2:30 PM (previous day) |
| 1:30 AM | 3:00 PM (previous day) |
| 2:00 AM | 3:30 PM (previous day) |
| 2:30 AM | 4:00 PM (previous day) |
| 3:00 AM | 4:30 PM (previous day) |
| 3:30 AM | 5:00 PM (previous day) |
| 4:00 AM | 5:30 PM (previous day) |
| 4:30 AM | 6:00 PM (previous day) |
| 5:00 AM | 6:30 PM (previous day) |
| 5:30 AM | 7:00 PM (previous day) |
| 6:00 AM | 7:30 PM (previous day) |
| 6:30 AM | 8:00 PM (previous day) |
| 7:00 AM | 8:30 PM (previous day) |
| 7:30 AM | 9:00 PM (previous day) |
| 8:00 AM | 9:30 PM (previous day) |
| 8:30 AM | 10:00 PM (previous day) |
| 9:00 AM | 10:30 PM (previous day) |
| 9:30 AM | 11:00 PM (previous day) |
| 10:00 AM | 11:30 PM (previous day) |
| 10:30 AM | 12:00 AM |
| 11:00 AM | 12:30 AM |
| 11:30 AM | 1:00 AM |
| 12:00 PM | 1:30 AM |
| 12:30 PM | 2:00 AM |
| 1:00 PM | 2:30 AM |
| 1:30 PM | 3:00 AM |
| 2:00 PM | 3:30 AM |
| 2:30 PM | 4:00 AM |
| 3:00 PM | 4:30 AM |
| 3:30 PM | 5:00 AM |
| 4:00 PM | 5:30 AM |
| 4:30 PM | 6:00 AM |
| 5:00 PM | 6:30 AM |
| 5:30 PM | 7:00 AM |
| 6:00 PM | 7:30 AM |
| 6:30 PM | 8:00 AM |
| 7:00 PM | 8:30 AM |
| 7:30 PM | 9:00 AM |
| 8:00 PM | 9:30 AM |
| 8:30 PM | 10:00 AM |
| 9:00 PM | 10:30 AM |
| 9:30 PM | 11:00 AM |
| 10:00 PM | 11:30 AM |
| 10:30 PM | 12:00 PM |
| 11:00 PM | 12:30 PM |
| 11:30 PM | 1:00 PM |
CDT vs undefined — which one do I use?
US Central Time switches between CDT (UTC−5) and undefined (UTC±NaN). Daylight time (undefined) runs from the second Sunday in March to the first Sunday in November. India never changes, so the IST gap is 10 hours 30 minutes in winter and NaN hours in summer.
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Other time zone conversions
From India time (IST)
To India time (IST)
Frequently asked questions
What is the time difference between IST and CDT?
IST is 10 hours 30 minutes ahead of CDT (UTC−5). Because India does not observe daylight saving time, the gap changes by one hour when the US clocks change.
How do I convert IST to CDT?
Subtract 10 hours 30 minutes to get CDT from the IST time. Example: 9:00 PM IST is 10:30 AM CDT. Use the converter above or the table below.
Is it CDT or undefined right now?
US Central Time uses undefined (UTC±NaN) from the second Sunday in March to the first Sunday in November, and CDT (UTC−5) the rest of the year. Most people say "CDT" for whichever Central time is in force, so check which one applies on your date. The converter shows both answers.
Does India (IST) have daylight saving time?
No. India uses a single time zone, India Standard Time (UTC+5:30), all year, with no daylight saving. Only the other side of the conversion can change.
Does IST here mean India Standard Time?
Yes. IST is also used for Irish Standard Time and Israel Standard Time, but on this page IST always means India Standard Time (UTC+5:30).