Convert India Standard Time to Central Standard Time
Instantly convert India Standard Time (IST) to Central Standard Time (CST) with our free online calculator.
India Standard Time
10:50:50 AM
Wed, Jun 24 (IST)
Central Standard Time
11:20:50 PM
Tue, Jun 23 (CST)
Convert a Specific Time
24-Hour Comparison
| IST | CST |
|---|---|
| 12:00 AM | 0.5:00 PM(-1d) |
| 1:00 AM | 1.5:00 PM(-1d) |
| 2:00 AM | 2.5:00 PM(-1d) |
| 3:00 AM | 3.5:00 PM(-1d) |
| 4:00 AM | 4.5:00 PM(-1d) |
| 5:00 AM | 5.5:00 PM(-1d) |
| 6:00 AM | 6.5:00 PM(-1d) |
| 7:00 AM | 7.5:00 PM(-1d) |
| 8:00 AM | 8.5:00 PM(-1d) |
| 9:00 AM | 9.5:00 PM(-1d) |
| 10:00 AM | 10.5:00 PM(-1d) |
| 11:00 AM | 11.5:00 PM(-1d) |
| 12:00 PM | 0.5:00 AM |
| 1:00 PM | 1.5:00 AM |
| 2:00 PM | 2.5:00 AM |
| 3:00 PM | 3.5:00 AM |
| 4:00 PM | 4.5:00 AM |
| 5:00 PM | 5.5:00 AM |
| 6:00 PM | 6.5:00 AM |
| 7:00 PM | 7.5:00 AM |
| 8:00 PM | 8.5:00 AM |
| 9:00 PM | 9.5:00 AM |
| 10:00 PM | 10.5:00 AM |
| 11:00 PM | 11.5:00 AM |
How to Convert India Standard Time to Central Standard Time
Formula
To convert India Standard Time (IST) to Central Standard Time (CST): Convert IST to CST
About India Standard Time (IST)
India Standard Time (IST, IANA: Asia/Kolkata) is the civil time of the Republic of India and Sri Lanka, set at UTC+5:30 — one of the world's most populous 30-minute-offset time zones. India does not observe Daylight Saving Time per the Government of India directive (a brief DST trial in 1942-1945 during WWII was discontinued; subsequent proposals from 2010-2017 were rejected by the Indian Government citing minimal energy savings + agricultural sector disruption). IST is defined as the local mean solar time at 82.5°E longitude (passing through Shankargarh fort in Uttar Pradesh, with the reference clock at the National Physical Laboratory in New Delhi per the Indian Institute of Astrophysics). The 30-minute offset is preserved because India's east-west extent (68°E to 97°E) spans ~28° of longitude — approximately 2 hours of solar time — and the central meridian is most representative for a single unified zone. IST serves approximately 1.4 billion people in India + 22 million in Sri Lanka (Sri Lanka observes SLST = UTC+5:30, identical to IST). Major cities: Mumbai (12.5M), Delhi (16.8M, NCR 29M), Bengaluru (8.4M), Hyderabad (10M), Chennai (7M), Kolkata (4.5M), Ahmedabad (5.5M), Pune (3.1M). Affects: BSE/NSE stock exchanges, IPL Indian Premier League cricket schedules.
About Central Standard Time (CST)
Central Standard Time (CST, IANA: America/Chicago, America/Mexico_City) is the time zone for the US Central region, central Mexico, and most of Central America, set at UTC-6:00. CST is the most populous US time zone by area covered and serves the Chicago-Dallas-Houston-Minneapolis corridor of ~80 million people across CST states (Texas, Illinois, Wisconsin, Minnesota, Iowa, Missouri, Arkansas, Louisiana, Mississippi, Alabama, Tennessee western, Kansas eastern, Nebraska eastern, Oklahoma, North Dakota, South Dakota, Kentucky western, Indiana western, Michigan UP, Florida panhandle) plus Mexico (Mexico City, Guadalajara, Monterrey since 2022 DST abolition), Honduras, Nicaragua, El Salvador, Costa Rica, Guatemala, Belize. CST observes DST (switching to CDT = UTC-5:00) per Energy Policy Act 2005 — except for Mexico nationally, which abolished DST in 2022 except for border zones aligning with US DST. CST affects: NYSE close at 15:00 CST, CME (Chicago Mercantile Exchange) commodity futures pit/electronic hours, Texas Medical Center coordinated patient handoffs.