As the ISS orbits our planet, from time to time it passes in front of the sun for a given location.

https://www.calsky.com and https://transit-finder.com/ allow you to predict such transits for your location.

Last Saturday such a transit happened, and I was able to capture it:

A combination of all frames that captured the ISS.

(Of course the sound is artificial!)

I used a 127mm refractor with a 2x teleconverter, shooting FullHD Video in DX crop mode on a Nikon D750.

Here are some images taken from the video, and a combination of all frames that captured the ISS:

A single frame showing the silhouette of the ISS in front of the sun.

An enlarged crop showing the shape of the ISS.