[ourmandave]

If you're an early riser this site will tell you when you can watch ISS fly over.

http://iss.astroviewer.net/observation.php

[jsingleton]

Nice. I remember using that to see the ISS over London on Christmas last year. Great sight.

http://www.ianvisits.co.uk/blog/2014/12/16/space-station-to-...

[MrBra]

There is also a neat Android app: Android ISS detector

https://play.google.com/store/apps/details?id=com.runar.issd...

[jefurii]

There's also SpotTheStation[1]. You can sign up to receive emails whenever the station is scheduled to pass over your location.

[1] http://spotthestation.nasa.gov/

[pavel_lishin]

Hm, I was on a mailing list that would tell me about upcoming transits last year - those were all in the evening, between 7 and 11pm or so.