title: How to shift date and time column by 6 hours in R?
body: <p>I have a date and time column which follows 24 hour format. Now I want it to shift it by 6 hours, such that 6 am of the current day becomes 00:00 and the day completes on 6 am of the following day. In excel, if we subtract 0.25 from the date column, it directly shifts the dates by 6 hours. But similar functionality doesn't seem to work in R. How does one achieve this in R?</p>