The getDayOfYear function takes a dateTimeValue as an argument, and returns a number representing the day of the year on which the specified dateTimeValue falls. The values range from 1 through 365 for normal years and 1 through 366 for leap years.
|<variable>||Variable which will contain the returned number of the day in the year.||NUMBER|
The date-time value based on which a number will be returned.
The date-time value can be specified without a time value, in which case 00:00:00 will be taken as the default time value.
A runtime error will be encountered if:
The function returns a null value if:
Refer this help document to learn about the supported date-time formats.
dayNumber = currentDate.getDayOfYear(); // returns 366