The timezone 5.5 refers to Indian Standard Time (IST), which is five and a half hours ahead of Coordinated Universal Time (UTC). It’s the standard time zone used throughout India. India doesn’t observe Daylight Saving Time (DST), so the time offset remains constant throughout the year.
Key points about IST:
- Offset: UTC+05:30.
- No DST: India does not observe Daylight Saving Time.
- Central Meridian: Based on the meridian passing through Prayagraj (Allahabad), which was chosen as the central meridian during British rule.
- Widely Used: IST is the standard time zone for India and is used in many other countries, including Sri Lanka.
