Hi Thako
There is no currently no fixed roster with DHL Air, sometimes you might do only a couple of nights away, sometimes upto 7 (normally with a weekend break, usually in Brussels). If a fixed roster is introduced, it is likely to be of the week on - week off variety. You will average 10 -11 days off per calendar month under the present system. Rosters come out well in advance, the April roster is due out anytime now.
Duty nights vary in length, the max currently allowable is 10hr15mins but the average is probably c.9 hrs. Start time can be anything from 1800 onwards, and finish time as late as 0715. You don't tend to visit the same destination on consecutive nights. Hotels are very good, usually in city centres though how much you have time to see depends on how well you sleep!
We do a lot of sitting around during the night, anything upto 5 hours at worst. A multi-sector night (upto 4 sectors) may last 10 hours but perhaps only 3 hours is actually airborne. Resting facilities are available at some locations but are not wonderful, nor particularly quiet.
In an average year you will only log around 300 hours.
In about a year's time the main DHL operation in mainland Europe is moving from BRU and CGN to Leipzig. This may well cause significant changes to the operation on a night to night basis, but no solid information has been given out.
Hope this helps you make a decision, feel free to pm me.