When enriching your date data, week information is pretty critical, I suggest adding %w to the format stings as well..
![Picture2.png Picture2.png](https://community.alteryx.com/t5/image/serverpage/image-id/19961iBC8A085EF2378407/image-dimensions/678x381?v=v2)
Several month based expressions can also be made weekly, data time first of week #31, last of week #45 etc....
![Picture3.png Picture3.png](https://community.alteryx.com/t5/image/serverpage/image-id/19962i17856F62AADDC8EC/image-dimensions/591x421?v=v2)
Also came across a lot of questions at our community on how to turn week based data...
Writing the formula is obvious (Ceil(DateTimeDiff([Today],[Date],'days')/7))
but having a DateTimeDiff([Today],[Date],'weeks') is preferable don't you think?
Cheers