1 day on a normal map equates to abaout half a year, it equals 1 hour ingame more than 7 days.
.. what value / benefit would then actually represented by day / night change or even weather / climatic conditions,
since merely every hour one fight tick occurs ..?
.. it would be just another, separate X-factor >>
whether it's now a spring-morning, summer-day, autumn-evening or winter-night at the moment when a unit / army is
next shooting ..
.. and all such things as e.g. unfavorable weather / clime, blizzards, cloudbursts, morning dew, glaring sun, full moon, abrupt night blindness, fear in the dark, fail shots, sudden engine damages or axle breaks, unpredictable very experienced opponents, ambushes, diarrhea epidemic, low morale / lack of concentration due to poor breakfast or too little sleep (or whatever), tangled fishing lines, torpedo failings, drunken officers, the afterglow (later then), arrogance mentality and underestimation of the opponent, lost lucky charms, etc. are allready abstract simulated by the unpredictable great X-factor.