# Date transformation for KNN

I have data set with date features like 01/01/2019 and I would like to use KNN. However, I cannot find a good transformation for dates that has a meaningful distance result for the last feature.

For example:

f1 | 1 | 2 | 3 | 4 | 01/01/2019

f2 | 10 | 3 | 12 | 1 | 14/01/2019

Does anyone have any recommendations?

daysDiffFeature = diffInDays(dateCol)