The term "previous week" refers to the time period that begins on the Monday immediately preceding the current week and ends on the following Sunday. This time period is considered to be the last complete week that has passed.

A week here is defined to start on Monday and end on Sunday. it has to be complete, i.e. 7 days. the current day of the week is irrelevant to this definition: all days share the same "last week"

updated the description. thanks!

To make the description correct, I think you should replace "the current date" with "the current week"

Though you do use "previous week", the description for the desired date range are still unclear. For instance, if today were a Tuesday, "the time period starting on the Monday immediately preceding the current date" would begin yesterday, and then the "following Sunday" would be in the future.

Should include order requirement in instructions; took me forever to figure out why I was passing some tests but not all...