Calendar 4-4-5

[Vaku1606]

Hello,

I would like to work on sales and production data for one customer which does not use regular calendar month, but a specific one called 4-4-5.

It means that 4 weeks as considered as January, 4 weeks as February, 5 weeks as March, 4 weeks as April etc.

My date reference is called BUDAT for production date and FKDAT for invoice date.

Thanks in advance and regards, 

[Or]

https://community.qlik.com/t5/Qlik-Design-Blog/Recipe-for-a-4-4-5-Calendar/ba-p/1464069

[Vaku1606]

Thanks a lot.

Do you know how should I set the parameters if every year always starts on 1st of January and ends on 31st of December?