Change data label to be date instead of sequential numbering

I’m trying to make a special spreadsheet, where I need data to be displayed sequentially, but all the data is grouped in pairs of two. So basically, I’m taking in two data points per day, but I don’t want them to be displayed on top of each other like the right side of the picture shows, I need them displayed side by side like the left side of the picture. However, I ALSO need it to be labeled with the date, like the right side of the picture. How can I get the best of both worlds?

Edit: Forgot the picture!

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If it is the data from the same source but separated by time then you would need to add the time as well (format DD/MM/YY HH) to column A to get horizontal separation.

If the second data point of the day is from another source than it should be in a different column. That way you would get a different colour for it although they would still be one above the other because it is still the same point on the horizontal axis.

Cheers, Al