Sa (1 bit): (0x00000040) The event occurs on Saturday.
F (1 bit): (0x00000020) The event occurs on Friday.
Th (1 bit): (0x00000010) The event occurs on Thursday.
W (1 bit): (0x00000008) The event occurs on Wednesday.
Tu (1 bit): (0x00000004) The event occurs on Tuesday.
M (1 bit): (0x00000002) The event occurs on Monday.
Su (1 bit): (0x00000001) The event occurs on Sunday.
PatternTypeSpecific Week
See
[MS-OXOCAL]: PatternTypeSpecific Week | Microsoft Learn