Whole Day Appt Sorting (Rules Not Working) in EpimToday

[AJ]

hi admin,
i hoped whole day appt in epimtoday would be sorted by the rules of tasks, so i could put this way holidays allways on top, but seem not to work.
i want sort the holiday on top of whole day appt. other which can be all day in same day are school holidays or some activities. however, need, as said, to sort it on top.
so i beg for it, as cant put holidays in title i try to hold it at least at the top.
i mean the sort order where . or _ are at the begin or before numbers or letters.
thx