a moon year is 27.5 days long but its 27.32 days in a lunar day
540 days is about the same as 18 months.
Grass has been green for a long long time - even back in the olden days.
A night on Callisto is 8.35 days since a full day (including night) is 16.7 Earth days long.
Mercury has a year of length 88 Earth days.
It varies from 95 to 160 days.
The 21st of March 2012 is 160 days before it and the 4th of February 2013 is 160 days after it.
198 days
90 days = 2 160 hours = 129 600 minutes = 7 776 000 seconds
Assuming a constant rate and no discounts for long rental (ie the total rental is proportional to the number of days): Work out rental for 1 day and then you can calculate how much 8 days will cost: 160 for 5 days ⇒ 160 ÷ 5 for 1 day = 32 for 1 day ⇒ 32 x 8 = 256 for 8 days.
Gestation ranges from 97 - 181 days, with an average of about 135 days.
130 days
There are 24 hours in a day so 160 hours is 6.6666... days.
160/7 = 22.9 weeks (approx)
The gestation period of the giant panda ranges from 95 to 160 days
160 days
160 mm = 16 cm