How to present data based on special calendar

[Ytung]

Normally January is Jan 1 -31, February is 2-28......

My company has OWN calendar, in 2020,

January : 2019 Dec 29-2020 Jan 25 (whole 4 weeks)

February : Jan 26 - Feb 29 (whole 5 weeks)

March : Mar 1 - Mar 21 (whole 4 weeks).....

What should I do when I choose to present data by year or month (using my company own calendar)? Thank you.

[v-lili6-msft]

hi  @Ytung 

You could custom a calendar date table by dax to create a new table, but for your description, there are only 4 weeks in one month, now there are 4*7*12=336 days in one year? How to define the remaining days?

Regards,

Lin

[amitchandak]

@Ytung , what you are trying to achieve here. YTD, MTD etc.

Approach will be to make it working using Ranks just like what have been done for Week in this blog -https://community.powerbi.com/t5/Community-Blog/Week-Is-Not-So-Weak-WTD-Last-WTD-and-This-Week-vs-La...

[parry2k]

@Ytung Read this post to get your answer quickly.

https://community.powerbi.com/t5/Community-Blog/How-to-Get-Your-Question-Answered-Quickly/ba-p/38490

[ryan_mayu]

@Ytung，

Please try the coding below to create the datetime table. It only contains the date from 2019/12/29 to 2020/3/21 because you only provide the logic for that period. You can modify the coding.

Dates = 
ADDCOLUMNS (
    CALENDAR (DATE(2019,12,29),DATE(2020,3,21)),
	    "Year", YEAR ( [Date] ),
	    "Monthnum", MONTH ( [Date]),
        "OwnCanlendarMonth", SWITCH(true(),[Date]<=date(2020,1,25),1,[Date]<=date(2020,2,29),2,[Date]<=date(2020,3,21),3)
	   )