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Many a times people need exact geolocation in terms of latitude and longitude of Indian cities. I remember How badly i required it when I was in school and need this for my school project and the only way to find was atlas which was very much painful to dig in. So if your kids or anybody else require here is the list of Longitude & Latitude all the cities in India arranged alphabetically.
The only drawback with this list is that there is no search feature integrated. You need to take a little pane to do your maths on your own but this list is definitely awesome.