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Colombo Time Zone — IST (UTC+05:30)

Colombo, Sri Lanka runs on India Standard Time at UTC+05:30. It does not observe daylight saving time, so the offset is fixed all year. Convert Colombo time to any city below, or use the full converter.

Current UTC offset
UTC+05:30
IANA zone
Asia/Colombo
Daylight saving
Not observed
Zone abbreviation
IST

About the IST time zone

India Standard Time (IST) is the time observed throughout India and Sri Lanka. It is based on the 82.5°E meridian, passing through Mirzapur in Uttar Pradesh. India uses a single time zone despite spanning roughly 30° of longitude, which has been debated. IST does not observe daylight saving time. India is the world's most populous country, making IST one of the most-used time zones globally. The IT outsourcing industry and call centers operate primarily on IST, making the EST-to-IST conversion one of the most searched timezone conversions.

Countries on IST
IndiaSri Lanka
Major cities on IST
MumbaiDelhiBangaloreKolkataChennaiHyderabadPuneAhmedabadColomboJaipurLucknowSurat
Did you know?
  • Sri Lanka Standard Time (SLST) uses UTC+5:30, same offset as India.
  • Colombo has one of the world's largest artificial harbors.
  • Sri Lanka produces some of the world's finest Ceylon tea.

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