Trying to figure out when a train passes a given signal box.

Hi all,

I am trying to understand what trains (freight or passenger) trains are passing by a certain stretch of railroad. The section is not frequently used, and I would like to understand how regular a train passes by for photographic purposes.

I have already looked at https://www.opentraintimes.com/ or https://www.map.signalbox.io/, both of which seem great, but do not provide me with a schedule of which trains will pass a given signal box.

Thanks :)