Start of last week:
N-WEEKDAY(N)+2-7-HOUR(N)/24-MINUTE(N)/1440-SECOND(N)/86400
Start of this week:
N-WEEKDAY(N)+2-HOUR(N)/24-MINUTE(N)/1440-SECOND(N)/86400
With N being the “Now” value. Assuming you start the week on Mondays.
Start of last week:
N-WEEKDAY(N)+2-7-HOUR(N)/24-MINUTE(N)/1440-SECOND(N)/86400
Start of this week:
N-WEEKDAY(N)+2-HOUR(N)/24-MINUTE(N)/1440-SECOND(N)/86400
With N being the “Now” value. Assuming you start the week on Mondays.