To Whom the Mornings stand for Nights — Midnight Sun

To Whom the Mornings stand for Nights,
What must the Midnights-be!
(F.1055/J.1095)
[1] Mornings:: alluding new, fresh poems by Dickinson. stand for:: to defend. Nights:: dark forces that can't see her poems.
[2] Midnight:: a hint on midnight sun, the sun as seen in the Arctic regions at midnight. Dickinson believed her poems are like midnight suns.

Dr. Clarke had now proceeded so far north, as to have almost reached the regions where the great object of his curiosity would be gratified by a sight of the midnight sun. There was now nothing like darkness, and the night was but a short twilight. The effect of this protraction of the day light is thus described by him as it was felt at Fanskog, a stage beyond Sundswall. The Edinburgh Monthly Review (1819)