How can I calculate prayer times with respect to longitude and latitude of my location?

All perfect praise be to Allah, The Lord of the Worlds. I testify that there is none worthy of worship except Allah, and that Muhammad is His slave and Messenger.

Sorry, we too do not know how to find out the direction of Qiblah using longitudes or latitudes.

However, to know the timings of the prayers, please refer to Fatwa 82907.

Allah knows best.