Mahanadi, Godavari, Krishna and Kaveri drain in the Bay of Bengal whereas Narmada drains in the Arabian Sea.

Indian Standard Time is calculated from the clock tower in Mirzapur nearly exactly on the reference longitude of IST at 82°30'E, within four angular minutes. In 1905, the meridian passing east of Allahabad was declared as a standard time zone for British India and was declared as IST in 1947 for the Dominion of India.

A sea cliff refers to a steep rocky coast that rises almost vertically above the seawater. Sea cliffs are typically formed by the erosive action of waves over a long period of time, causing the coastline to retreat inland and leaving behind a vertical or near-vertical rock face. These formations are often found in areas with rugged coastlines and are a result of various geological processes and erosion by the sea. Sea cliffs can be impressive natural landmarks and are often admired for their dramatic and picturesque views.