Satellite images keep on updating after a regular interval but here in my country India, the situation is not very good. Sometimes on google earth it is still showing forests whereas the construction has been completed there and apartments are made, so how reliable these data are is still a question in many countries like India. Although this technology is revolutionary here we not benefitted by it.
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Data is there, public access via free services maybe it is not that easy in all the countries and the availability is there, but under licensing, so this problem is a Google problem itself.
Anyway, the Copernicus program of the European Space Agency offers free imagery, and their cameras don't stop sensing anywhere, so India is covered. You don't have borders at space (somehow).
You can find the Copernicus images at the link @fredrikaa has posted at the end of the post to the SciHub, look for Sentinel-2 and Sentinel-3 images for visual optic imagery. If you are interested in ocean data you can enter Eumetsat CODA and retrieve data from Sentinel-3.
If you want to play a bit with a viewer/marketplace you can use Geocento or the NASA Worldview for derived information
Other companies offer services with more images, most of the times paying but sometimes with a free testing period
Google Earth is made of very high-resolution images that are purchased at very high prices. The frequently updated images which will detect those changes are not shown in Google Earth.
That is the same anywhere in the world. If you want to see recently taken images you should either try the link I provided at the end, or the online tool EO Browser access and quality is the same no matter where you are in the world.
Thanx for giving me much detailed info about other programs.