About fifteen years and 6 months if you would like to calculate how long it is going until it cancels.
Fifteen feet is fifteen feet long.
15 weeks = 3.45 months
the idiot calendar
yup
It made it possible for Caesar to introduce the Julian calendar.
From 11th February, 2015 to 11th April, 2015, there are 3 months (February, March, April).
About fourteen or fifteen days
the version i have is fifteen minutes long
Fifteen has a long "ee" vowel sound as in the word "see."
About fifteen feet.
about fifteen years