Obtains a {@code Duration} representing a number of standard 24 hour days.
!(p)
The seconds are calculated based on the standard definition of a day,
where each day is 86400 seconds which implies a 24 hour day.
The nanosecond _in second field is set to zero.
@param days the number of days, positive or negative
@return a {@code Duration}, not null
@throws ArithmeticException if the input days exceeds the capacity of {@code Duration}
Obtains a {@code Duration} representing a number of standard 24 hour days. !(p) The seconds are calculated based on the standard definition of a day, where each day is 86400 seconds which implies a 24 hour day. The nanosecond _in second field is set to zero.
@param days the number of days, positive or negative @return a {@code Duration}, not null @throws ArithmeticException if the input days exceeds the capacity of {@code Duration}