For anyone doing hour building, my advice is to get a night rating and if you feel comfortable and safe to do so, build some hours at night. A lot of entry level contract companies only do day flight and when you get ready for command, it can cost a lot of money to build up the required night hours required for ATP. Negotiate with the flight school, at night their aircraft is normally not busy, but ensure the aircraft is technically sound and fly at half moon or better, at a field with good lights, just in case. Take off late dusk (technical issues often occur but of course not always, during or after first take-off) and continue into the night.