How to add an empty line after lines starting with a timestamp

The log viewing experience is so bad in my current company. I want to add new line to the logs that I've trimmed for a specific time duration. I want a new line after every date-time. The date-time format is like this. 2023-10-03 15:34:37 I am aware tr can do this but I'm not sure how. I'll select the answer best anyone who can tell me how to write that new to a new file. Because of performance reasons. I don't prefer using vi, I use less as a logs reader.