Help for solving Error and question

Hi Lscia

Maybe you can try this:

Please change your formula by adding the expected day  for example Day.Sunday for Saturday or Day.Monday ( for Sunday).

= Table.AddColumn(#"Changed Type", "Custom", each Date.EndOfWeek([date],Day.Monday))

The result is as follow:

Or add a column Weekday([Date},1), like this:

= Table.AddColumn(#"Added Custom", "Custom.1", each Date.EndOfWeek([date],1))

The result is as follow:

^{Best Regards,}

^{Zhengdong Xu}

^{If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.}