Clear Delay Weekly Alarm Scenario

I need to alarm once a week on Machine A status tag (On/Off) the first time the Machine turns on. The clock should reset every week on Sunday at noon. So, one alarm each week the first time Machine A status flags 1 after Sunday at noon and not again until the clock resets the next Sunday.

I am wondering if there is an elegant way to use the Clear Delay setting on the alarm to dynamically bind to the next Sunday at noon. So, alarm goes active but does not clear until the next Sunday at noon.

Am I on the right rack with possibly using the Clear Delay setting for this scenario?