The date must be entered using this format: DDMMMYYYY, where DD is the day (numeric), MMM is the three-letter abbreviation of the month, and YYYY is the year (numeric). For example, a target date of October 20, 2017 must be entered as 20OCT2017.
Alternatively, click to open the Calendar , showing the current date:
Select the target date using the calendar and then click in the Calendar to specify the date, as shown below;