This page allows you to input a target and observing day - it will then display the altitude of the target for each session of that day.

This may help you to book the best session to observe that target, since the greater the altitude, the less air mass is in the way.

You can choose the target by RA and Declination - or by name or designation, such as 'Jupiter' or 'M11' or 'Ceres'.

Right Ascension:   (Hour, Minutes, Seconds)
Declination:    (+/-, Degrees, Minutes, Seconds)
Date: (yyyy-mm-dd)

Or

Date: (yyyy-mm-dd)