Well in my experience, especially if trading between the earth and the moon, using even 1 day increments can lose you some wealth. And stacking spaceports on earth and the moon will have a huge impact on that trade.
Bonus points, if early on I colonize earth, and let them buy up all of earths infrastructure for a few years, when i terraform it a few years down the line, i just use that inf elsewhere (think in my current game, luna made it to 35k inf without any direct production from myself) much more doable in a conventional start though (more early game spare time waiting for techs).
But this game itself for example. After luna started getting up there and i had gotten 100 terraformers out. Started shifting all that inf to mars it boosted up real quick started tforming that, moved out to the jupiter moons. (Suprisingly easy to drop their colony costs you know) focused down ganeymede, now its producing inf for ther others, and titan is in my sights...
But i have over 200 civvy ships. 1 of the companies has over 5mil tons of ships. And due to the fact that its on my laptop which i cant start a second empire on, i have no way of throttling the civvys back. So, as i keep trying to research enough so i can branch out... its been 45 years sonce the start of the campaign, and already am at 15 min 5day cycles. When i have only explored sol, theres no npr, and asteroid and planet movement boxes are unchecked