I am doing a project on change detection on remote sensory images over India. I need images of the same place on two different time instances. However i am only able to find images of certain place in a particular time (not selected by me).
You can access multiple years of Landsat data here: https://earthexplorer.usgs.gov
Sentinel data can be found here: https://earthexplorer.usgs.gov And this post explains how to access the data: https://gisgeography.com/how-to-download-sentinel-satellite-data/
Landsat has global coverage and decades of data, but you may want to be careful that the data you are accessing has the same satellite footprint / spatial resolution. The newest data, of higher ewsoluation, can be matched to the 30m resolution of older data by resampling the Imagery if you want to use a consistent spatial resolution.
Sentinel-2 provides repeat passes of most of the Earth's surface.
If your location is within the United States, you can download imagery from the National Map Viewer.