Hi,
Here is a different approach to your problem.
1) I computed a new column capturing only the Day and Month from the Date column (continuous)
2) I created a custom Date Format DD/MM
3) I plotted this new column as X axis using a 4-week interval
![Thierry_S_0-1692112502430.png Thierry_S_0-1692112502430.png](https://community.jmp.com/t5/image/serverpage/image-id/55783iF648A64282A47C64/image-size/medium?v=v2&px=400)
Best,
TS
Thierry R. Sornasse