@supernova-8 I think that he is trying to say that he wants to know before the weekend starts, since then he can adjust his playstyle / settings accordingly
For example: If there were to be an event that would speed up the construction of stadium upgrades, it would then take 6 hours instead of 18. If you were to start building on Thursday around 11pm, this would mean that the construction would be done around 5 pm, the next day. This means that you wouldn't get any profit from the event until you finished building, since it will not speed up your current construction.
The same goes for the speedy scout: If you start scouting on friday morning (let's say 9am (which means that in The Netherlands the event hasn't started yet.) and then suddenly see that the scouting time would be shortened from 16 tot 2 hours on the same day (let's say you see the message on 10 am), you would have to spend 15/14 bosscoins in order to actually profit from the event.
For me this isn't really a problem, since I am willing to spend some bosscoins, but for the less fortunate / more preservative players, this could present a problem.
As for the current event, I cannot fully profit from it today, since I already played a couple of friendlies yesterday evening on my most important slot. If I knew that the event would start today, I wouldn't have played those friendlies yesterday, but I cannot turn back time now can I?
I fully understand that sometimes it simply isn't possible to do anything perfect, and I know that @Harry-Poon is a busy man and that he sometimes can't give us this information on time, but I do get @Márcio-Girilim-Santos's point