Timechart - x-axis to show label/ticks as Sunday instead of Monday

[andrewwjc]

Hey there folks!

Can't believe I'm stuck on something which could be pretty simple.
I have a timechart with span=1d working well.
However, I can't seem to get the x-axis label (tick marks) to show Sundays instead of Mondays.
The weekly interval tick marks is ideal, but I just need it to be Sundays instead.

Is there a way?

|inputlookup test.csv
        | replace N/A WITH N IN 2B_FLAG
        | replace N WITH 2C, Y WITH 2B IN 2B_FLAG
        | eval NewTime=strptime(SHP_CREATED_DTM,"%d-%b-%y")
        | where NewTime>=1577836800
        | eval _time=NewTime
          | timechart span=1d sum(SHP_VOL) by 2B_FLAG
          | sort _time