600 days = 1.64 years, approx.
600 what? 600 days is 600 days...
600 days = 19.7 months.
25 days.
25 days
600
That's a total of 600 hours.
If you could maintain a steady 600 mph in a straight line, you could be on the moon in only 397 days.
600
about 600 per year
There are 365 days in a year. If it is a leap-year, then there are 366 days.
There are 365 days in a year
365 days this year.