title: Convert 2 digit years into 4 digit years and change the format in R
body: <p>I have a dataframe with a date column in the following format <code>&quot;21/03/22 20:00&quot;</code> which stands for 21 March 2022, 08 PM. I would like to convert that column with the format <code>&quot;2022-03-21&quot;</code>. Is there an easy way to do this in R? I've searched in related questions but none of the answers helped me. Thanks</p>