What time is it in CST when it is noon in IST?

When it is 12:00 noon in India Standard Time (IST), it is 01:00 (Mon) in Central Standard Time (CST) right now. The exact value can change by an hour at daylight saving transitions, so always compute against today's date.

Are CST and IST the same time zone?

No. CST (Central Standard Time) and IST (India Standard Time) are distinct zones with different UTC offsets. Right now CST is UTC-06:00 and IST is UTC+05:30.

How many hours apart are CST and IST?

Right now CST is 11 hours behind IST. The gap can shift by an hour when either zone enters or leaves daylight saving, which is why the 24-hour table above is computed against today's date.

Does CST observe daylight saving time?

Yes. Central Standard Time shifts forward an hour in spring and back in autumn, so the wall clock in Chicago, Dallas and Houston moves with the seasons. The IANA tzdata handles the exact dates for you.

How do I schedule a call between CST and IST?

Pick a slot where both ends are inside their working day. The best-meeting-times strip above shows the windows where both CST and IST sit in 9-to-5 business hours today. If you need to commit to a specific minute, open the converter. It handles daylight saving transitions automatically. Note that CST observes DST while IST does not, so the gap shifts by an hour twice a year.

What time is it in CST when it is noon in IST?

When it is 12:00 noon in India Standard Time (IST), it is 01:00 (Mon) in Central Standard Time (CST) right now. The exact value can change by an hour at daylight saving transitions, so always compute against today's date.

Are CST and IST the same time zone?

No. CST (Central Standard Time) and IST (India Standard Time) are distinct zones with different UTC offsets. Right now CST is UTC-06:00 and IST is UTC+05:30.

How many hours apart are CST and IST?

Right now CST is 11 hours behind IST. The gap can shift by an hour when either zone enters or leaves daylight saving, which is why the 24-hour table above is computed against today's date.

Does CST observe daylight saving time?

Yes. Central Standard Time shifts forward an hour in spring and back in autumn, so the wall clock in Chicago, Dallas and Houston moves with the seasons. The IANA tzdata handles the exact dates for you.

How do I schedule a call between CST and IST?

Pick a slot where both ends are inside their working day. The best-meeting-times strip above shows the windows where both CST and IST sit in 9-to-5 business hours today. If you need to commit to a specific minute, open the converter. It handles daylight saving transitions automatically. Note that CST observes DST while IST does not, so the gap shifts by an hour twice a year.

Time zone comparison

CST vs IST time zone comparison

Central Standard Time (CST, UTC-06:00) vs India Standard Time (IST, UTC+05:30). Right now CST is 11h behind IST. CST is used in Chicago, Dallas and Houston while IST covers Delhi, Mumbai and Kolkata. Use the 24-hour grid below to find a meeting slot both sides will tolerate.

Right now in CST

--:--:--

UTC

Right now in IST

--:--:--

UTC

Heads up: these zones diverge on daylight saving.

CST observes DST while IST does not, so the gap shifts by an hour twice a year. In January the difference is 11h, in July it is 10h. If you are scheduling across the spring or autumn transitions, double-check the date.

No standard 9-to-5 overlap today between CST and IST. Either side will need to take the call outside core hours. See the table below for the closest workable slots.

24-hour comparison

Each row is one hour. Green rows are when both sides are inside 9 AM to 5 PM.

Convert exact time →

24-hour wall-clock comparison between Central Standard Time and India Standard Time, with business-hour overlap highlighted.
Hour	CST (Central Standard Time)	IST (India Standard Time)	Overlap
12 AM	00:00Mon	11:30Mon	IST only
1 AM	01:00Mon	12:30Mon	IST only
2 AM	02:00Mon	13:30Mon	IST only
3 AM	03:00Mon	14:30Mon	IST only
4 AM	04:00Mon	15:30Mon	IST only
5 AM	05:00Mon	16:30Mon	IST only
6 AM	06:00Mon	17:30Mon	No overlap
7 AM	07:00Mon	18:30Mon	No overlap
8 AM	08:00Mon	19:30Mon	No overlap
9 AM	09:00Mon	20:30Mon	CST only
10 AM	10:00Mon	21:30Mon	CST only
11 AM	11:00Mon	22:30Mon	CST only
12 PM	12:00Mon	23:30Mon	CST only
1 PM	13:00Mon	00:30Tue	CST only
2 PM	14:00Mon	01:30Tue	CST only
3 PM	15:00Mon	02:30Tue	CST only
4 PM	16:00Mon	03:30Tue	CST only
5 PM	17:00Mon	04:30Tue	No overlap
6 PM	18:00Mon	05:30Tue	No overlap
7 PM	19:00Mon	06:30Tue	No overlap
8 PM	20:00Mon	07:30Tue	No overlap
9 PM	21:00Mon	08:30Tue	No overlap
10 PM	22:00Mon	09:30Tue	IST only
11 PM	23:00Mon	10:30Tue	IST only

How CST and IST compare

Central Standard Time (CST) sits at UTC-06:00 today, while India Standard Time (IST) is at UTC+05:30. The current gap is 11 hours, with CST behind IST. In practical terms, if your morning starts at 9 AM in Chicago, your counterpart in Delhi is seeing 20:30 on their own watch at that exact moment.

CST is the working clock for Chicago, Dallas and Houston. CST also refers to China Standard Time (Asia/Shanghai) and Cuba Standard Time. North American intent dominates search volume. IST covers Delhi, Mumbai and Kolkata. IST is ambiguous: India Standard Time, Irish Standard Time, and Israel Standard Time all share the abbreviation. We default to India (largest population). For Ireland use Dublin or WET, for Israel use Asia/Jerusalem. If your team is split between these two regions, the table above is the quickest way to spot the daily overlap window without doing the offset arithmetic in your head.

Daylight saving matters here. Central Standard Time shifts forward an hour on the second Sunday of March (US) or the last Sunday of March (Europe) and back on the first Sunday of November or last Sunday of October. India Standard Time stays on a fixed offset year-round. The IANA tzdata baked into this page handles every transition automatically, so the table reflects the correct wall-clock times for today's date. For dates further out, use the converter linked above and pick the target date explicitly.

Common scheduling traps are easy to avoid here. Pick a wall-clock time on one side, read the matching wall-clock on the other from the table, and write both into the calendar invite, never just the difference. If the meeting falls in the week of a DST changeover and one of these zones shifts, the absolute clock will drift by an hour from what the recipient expects. The table is computed for today's date, so for a future meeting open the converter linked above and pick the exact date.

One last note for asynchronous teams: business-hour overlap is the wrong metric for handoff workflows. If you operate on a follow-the-sun model, you actually want zero overlap, with one team logging off as the other starts. CST and IST differ by 11 hours, which gives you partial coverage. Add a zone in between if you want full 24-hour rotation.