Convert India Standard Time to Eastern Daylight Time
Instantly convert India Standard Time (IST) to Eastern Daylight Time (EDT) with our free online calculator.
India Standard Time
10:50:50 AM
Wed, Jun 24 (IST)
Eastern Daylight Time
01:20:50 AM
Wed, Jun 24 (EDT)
Convert a Specific Time
24-Hour Comparison
| IST | EDT |
|---|---|
| 12:00 AM | 2.5:00 PM(-1d) |
| 1:00 AM | 3.5:00 PM(-1d) |
| 2:00 AM | 4.5:00 PM(-1d) |
| 3:00 AM | 5.5:00 PM(-1d) |
| 4:00 AM | 6.5:00 PM(-1d) |
| 5:00 AM | 7.5:00 PM(-1d) |
| 6:00 AM | 8.5:00 PM(-1d) |
| 7:00 AM | 9.5:00 PM(-1d) |
| 8:00 AM | 10.5:00 PM(-1d) |
| 9:00 AM | 11.5:00 PM(-1d) |
| 10:00 AM | 0.5:00 AM |
| 11:00 AM | 1.5:00 AM |
| 12:00 PM | 2.5:00 AM |
| 1:00 PM | 3.5:00 AM |
| 2:00 PM | 4.5:00 AM |
| 3:00 PM | 5.5:00 AM |
| 4:00 PM | 6.5:00 AM |
| 5:00 PM | 7.5:00 AM |
| 6:00 PM | 8.5:00 AM |
| 7:00 PM | 9.5:00 AM |
| 8:00 PM | 10.5:00 AM |
| 9:00 PM | 11.5:00 AM |
| 10:00 PM | 0.5:00 PM |
| 11:00 PM | 1.5:00 PM |
How to Convert India Standard Time to Eastern Daylight Time
Formula
To convert India Standard Time (IST) to Eastern Daylight Time (EDT): Convert IST to EDT
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 Eastern Daylight Time (EDT)
Eastern Daylight Time (EDT, IANA: America/New_York during DST window) is the summer-time variant of EST, set at UTC-4:00 — observed from the second Sunday in March to the first Sunday in November per the US Energy Policy Act of 2005. EDT shares the same UTC offset as Atlantic Standard Time (AST — observed year-round in Canadian Maritimes Nova Scotia/New Brunswick/PEI and in Caribbean Puerto Rico/USVI/Bermuda) and as Bolivia/Chile/Paraguay Standard Time. The 'spring forward' transition at 02:00 EDT in March is the largest single coordinated time change in human history, affecting ~150 million US East Coast residents simultaneously per US Census. Florida passed the Sunshine Protection Act in 2018 attempting to stay on EDT year-round, but it required US Congressional approval (US Code 15 §260a) which has not been granted as of 2024. EDT affects: US Federal Government tax-filing deadlines (IRS Form 1040 due 23:59 EDT on April 15), NFL Sunday Night Football scheduling, and US Supreme Court oral-argument schedules in DC.