Question about UP Potash Local

Hello!

I was wondering when the UP Potash Local operates around Moab, UT and Grand Jct. CO. I'll be on a trip around those areas and I think it would be worth seeing. Thanks!

The Cane Creek Sub is very chaseable from I-70(Brendel) to around Arches National Park on US 191,the branch does not go near
Moab but hugs a cliff edge toward the end of track. Beware of heavy traffic on US 191,both truck and tourist.
UP DS 380 uses 160.320,and 160.920 as road channels,listen for a track warrant to be issued.
Timing is very random

Thank you!