What is the benefit of launching a satellite "a few days before the monthly report"

I've seen this hint in the game as well as on this site and I've been wondering if there is any specific advantage to launching satellites closer to the monthly report rather than any time during that month.

The way I see it, monthly maintenance costs are taken out during the reports (correct me if i'm wrong), so regardless of when you launch it during the month it would cost the same.

Is the benefit of holding on to them longer simply a safety net in case some countries go into the red during that time?