Semi-static date in variable

Hi,

I need to have a variable which tells me the timestamp of the previous Thursday at 22:30:00.

I added a ‘Date and Time’ and a variable, and then i thought to use a until function, but got stuck with what value to pass.

the reason for this is that i’m creating a dashboard which shows real-time server performance, and for a section on this dashboard, which shows reboot time of services, i need to perform a check between the start time of the service and the reboot time, which is on Thursdays nights.

Does any one have an idea how to do this?

Regards,

Nick