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Convert India Standard Time to Singapore Time

Instantly convert India Standard Time (IST) to Singapore Time (SGT) with our free online calculator.

Reviewed by Christopher FloiedUpdated

India Standard Time

10:50:51 AM

Wed, Jun 24 (IST)

Singapore Time

01:20:51 PM

Wed, Jun 24 (SGT)

SGT is +2.5 hours from IST

Convert a Specific Time

IST

24-Hour Comparison

ISTSGT
12:00 AM2.5:00 AM
1:00 AM3.5:00 AM
2:00 AM4.5:00 AM
3:00 AM5.5:00 AM
4:00 AM6.5:00 AM
5:00 AM7.5:00 AM
6:00 AM8.5:00 AM
7:00 AM9.5:00 AM
8:00 AM10.5:00 AM
9:00 AM11.5:00 AM
10:00 AM0.5:00 PM
11:00 AM1.5:00 PM
12:00 PM2.5:00 PM
1:00 PM3.5:00 PM
2:00 PM4.5:00 PM
3:00 PM5.5:00 PM
4:00 PM6.5:00 PM
5:00 PM7.5:00 PM
6:00 PM8.5:00 PM
7:00 PM9.5:00 PM
8:00 PM10.5:00 PM
9:00 PM11.5:00 PM
10:00 PM0.5:00 AM(+1d)
11:00 PM1.5:00 AM(+1d)

How to Convert India Standard Time to Singapore Time

Formula

To convert India Standard Time (IST) to Singapore Time (SGT): Convert IST to SGT

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 Singapore Time (SGT)

Singapore Time (SGT, IANA: Asia/Singapore) is the civil time of the Republic of Singapore, set at UTC+8:00 year-round (no DST). Singapore historically used UTC+7:30 (with Malaya) before 1982, then adjusted to UTC+8:00 in January 1982 to align with major regional trading partners China + Hong Kong + Malaysia. The Singapore Public Utilities Board oversees official timekeeping per the legal-time reference at the National University of Singapore. SGT is identical in offset to China Standard Time (CST), Malaysia Time (MYT), Hong Kong Time (HKT), Philippine Time (PHT), Western Australia Time (AWST), Brunei Time (BNT) — making coordination across the Asia-Pacific tropics seamless. SGT serves the city-state of Singapore's approximately 5.9 million residents (citizens + permanent residents + foreign workers). Despite its small geographic size (728 km² — smaller than New York City's 5 boroughs), Singapore is one of Asia's most important financial centers. Affects: SGX (Singapore Exchange) trading hours 09:00-17:00 SGT, Port of Singapore Authority shipping operations (the world's second-busiest container port after Shanghai), Changi Airport flight scheduling (often the world's #1-ranked airport), and the Marina Bay Sands hotel + Gardens by the Bay operating hours.

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