From: Winnipeg, MB
IIRC, you cannot launch a mine drop mission at night. One of the things that made me roll my eyes and not bother with that kind of mission.
BB, Expect this is just a feature you've not used much. Just double checked with an older game I've got (March '44), PBEM, DBB-C, v188.8.131.52b, and I was definitely able to create a night city attack, designate as mining of the port. In this particular case used B-25s to test.
It is linked to City Attack...so the order of selection would be switch to night, select city attack, select city, and in the bottom left, is the "mine port" selection (in leu of selecting the city target (resources, manpower, et.al.). Although I could alternate between night/day so not required to select night at the beginning.
Thanks for the correction! I may have set the city attack first and not seen an option for a night attack, or the night option was added in an update (I played patch 1124 for a long time, only updated last year). That should make the minelaying less risky, but the fact that the IJ player can see it happening and immediately sweep is the biggest drawback IMO.
No matter how bad a situation is, you can always make it worse. - Chris Hadfield : An Astronaut's Guide To Life On Earth