First time spotting a C-17 Globemaster

This was the IAF’s C-17 Globemaster III in the skies over my hometown in India, and I assume it was on COVID duty. The week before this sighting, a USAF C-17 had landed in India, though it was seemingly not in my hometown.

I first took it for a tiny dark cloud and couldn’t figure out why it was in a clear, sunny sky—until it started moving too fast and the symmetry gave it away: a plane.