How many seconds are in 15 years and 11 months and 7 days?

Answer 1

1 year =365x86400 = 31,536,000 seconds

There are 60 seconds in a minute and 60 minutes in an hour and 24 hours ina day.

1 day = 24x60x60 = 86,400 seconds

There are 30 days in a month (depends on which month since some are more or less)

1 month = 30x86,400 = 2,592,000 seconds

There are 365 days in a year

1 year =365x86400 = 31,536,000 seconds

so in 15 yrs and 11 mos and 7 days there are 15x31536000 + 11*2592000 + 7(86400) = 502,156,800 seconds