There are different frames of reference:
1 True solar day
2 Mean solar day
3 Stellar (sidereal) day
If you calculate 60 seconds times 60 minutes times 24 hours you get 86 400 seconds.
Days on the moon are 29.531 earth days long.
Days on the Earth are 24 hours long. Days on the Moon are about 29.5 days, or 709 hours.
1 year and 32 days earth days 3 days
The lunar day is about 29 earth-days long.
24.62 Earth days and 686.78 Earth days.
One Neptune year is equal to 60,190 earth days.
It takes the Moon about 27.3 Earth days to orbit around the Earth.
The years in Pluto are 249 Earth years. :) The days in Pluto are 6.4 Earth Days. :)
1 Earth year is Earth 365 days normally, or 366 Earth days for a leap year.
one full day on mercury is 88 earth days
58.6 Earth days
About 687 Earth days.