Board Thread:Questions and Answers/@comment-25349773-20141127164836/@comment-25732404-20141130055833

Ninthsense wrote: Also pure night battle nodes seem to have reduced defense for SS. Not sure about evasion but they take heavy damage beyond normal battles. The defense of the Abyssal Ships are fixed, don't change because of the kind of battle you are, the problem here is the rules of Day and Night Battle are different.

"Formation bonuses and penalties apply in night battles, but Engagement Forms do not" 

But:

''"Exception: In Nodes that begin with a Night Battle, an Engagement Form is rolled invisibly, the multiplier for which is applied to Anti-Submarine damage only." ''

And remember... "RGN Game" sometimes you have good results with no good conditions, another times you have poor results with good conditions.