Indian Standard Time (IST) | Greenwich Mean Time (GMT) |
1. It is calculated at the Allahabad Observatory in Uttar Pradesh. | It is calculated at the British Royal Observatory in Greenwich near London. |
2. It is 05:30 hours ahead of GMT. | It is 05:30 hours behind the IST. |
3. It passes through 82½° E longitude. | It passes through 0° longitude. |