The following is a -very- accurate time conversion table. Instead of the simple 365 days in a year, I've calculated it using 8 decimals of accuracy!
So if you want to know how many seconds in a millennium, yeah, I've got it, AND with decimals! I even did it in reverse, so you can know how many years are in a day! Now this
is anal! To use it, pick the time unit you want to start with on the left of the table below. Then, move to the column of the time unit you want to convert to.

Example: Suppose I want to find out how many minutes are in a year, I'd first find minutes in the first column. Then I would move over to the column marked
year. This would give me the number: 525,948.7662432. Thusly, there are Five-hundred twenty-five thousand, nine-hundred and forty eight point seven six... minutes in a year.