You will likely need to convert all of the recorded dates to the Indian Hindu B.S. rankings. Most governments located in regions of earthquake activity measure and record them. The most accurate and timely would likely be the Nepalese government. A quick list of major Nepali earthquakes is here:
Because you are on this site, I assume that you have some sort of Internet connection. These things are pretty easy to find in a general search. Learning how to do that will save you a lot of time.