Would the attack on HX 106 come by day or night?

Was a day or night attack more likely when the German ships found HX 106?

The historical plan was a dawn attack, but the Germans broke it off as soon as they recognized Ramillies.

The German ships approached HX 106 for a dawn attack, with Scharnhorst coming from the south and Gneisenau from the northwest. Scharnhorst's crew identified Ramillies at 09:47 and reported the battleship to Lütjens, who cancelled the attack. Captain Kurt-Caesar Hoffmann nevertheless came within about 12 miles while trying to draw the escort away, violating Lütjens's order and earning a radio reprimand. Ramillies's crew initially mistook the German ship for an Admiral Hipper-class cruiser, illustrating how uncertain visual identification remained on both sides.