Based on this post, I've been assuming that Q was indicating that there were 5 total times this would occur, and was showing us where [10] fell in the sequence.
If you assume [5] was the final marker, then that leaves [15] and two others prior to the [10] to find, if this assumption about the post is correct.
Q also called the Pope / Lord's prayer shot call a "marker," and has also included the [] surrounding many other words or letters.
I think all are possibly a part of it.
Possible that markers should be added to a clock based on minute stamp of the Q post.
The Q/Potus markers I think are the keystone to the entire map.
Isn't that what Q told us? He told us the keystone would let us read the map, and he also said it literally represents Q and POTUS.
I think if you lay out posts based on timestamps, around the clock (probably just certain ones, possibly just the ones containing markers)…..
Would the "delta" on the Q/POTUS marker days create a "slice" of the clock, indicating the events that will occur next? Any other marked post that falls in that time gap, on any date, will happen soon?
Either what I said here "the delta shows the slice of pie"
Or, what if the Q/POTUS markers are to show us where to move the minute hand [5] [10] [15] etc.
Once you move the minute hand, it should be pointing towards posts that have been arranged at that location on the clock, signifying that information is immediately relevant?