To be exact, it takes 365 days, 5 hours, 48 minutes and 46 seconds. For a long time people did not add these extra hours and minutes and seconds. It was like using a watch that runs slow.
I am so confused with the usage of and in"extra hours and minutes and seconds." I think,according to comma rules, it should be these extra hours, minutes and seconds.
Does "and" use to leave out the repeated word "extra"?