Yes I know I can use a computer, or a smartphone. But I want to keep things simple and just use an Clock Radio Alarm.
I have a PURE Siesta DAB clock radio. It has 3 alarms. It lets me program those alarms for Weekday, Weekend, Sat, Sun
I want different alarm times for:
Mon/Tue, Wed, Thu/Fri, Sat, Sun
Even better would be having a bi-weekly varying alarm time for a Monday, so Week1 5.45am, Week2 9am. But that's asking way too much 
There is no hope is there... manufacturers of clock radio alarms just don't consider that people may do shift work and need different alarm times on different days.