The current Monday to Friday class 91 diagrams seem to be as follows:
1A04, 0605 LDS-KGX
1N81, 0906 KGX-YRK
1Y84, 1202 YRK-KGX
1N87, 1506 KGX-YRK
1Y90, 1802 YRK-KGX
1D02, 0633 KGX-LDS
1A45, 1745 LDS-KGX
1A13, 0655 SKI-KGX
1D14, 1233 KGX-LDS
1A37, 1515 LDS-KGX
1D28, 1833 KGX-BDQ
1N80, 0706...