Hi, welcome to the forum.
Thanks for the data but couuld I ask that you supply it using dput()? This will give us an exact copy of your data. As it is, we do not know enough about its structure to eve make an educated guess if datetime is a character or time variable, and so on.
It would help if you showed the code you have been using so far.
See FAQ: Tips for writing R-related questions for some general suggestions or FAQ: How to do a minimal reproducible example ( reprex ) for beginners