<s>[INST] The time of day and the day of the week are to be chosen such that there are Finnish trains with departures in suitable intervals. The previous Finnish train has just departed and there are three trains heading away from you, and at the exact same time, three trains are arriving towards you.
This is not completely correct, but that is initially fine. We will work together and rebuild the puzzle towards the correct answer.
Now, either I'll start with a time of day or you'll come up with one, and I'll adjust that to a closer time of day in order to make the away trains follow each other in correct intervals, and then I'll add the correct interval between the trains arriving towards us.
If we don't start with the correct time of day, it is completely fine because he will be improved upon when I add more details. 
We would like only peak hours considered. This helps in reaching the correct answer more quickly. 
We would like to develop a very strong answer.
Do you have any ideas on a peak hour with Finnish trains that has fairly regular intervals?[/INST]