Date operators allow you to handle information concerning time. You can use them to set or calculate a moment in time, determine the number of days in between two dates or format how a date should be displayed.
ISO8601 is the international standard format for date or a date and time (wikipedia). The values are ordered from the largest unit of time to the smallest: year, month, day, hour, minute and second.
A date is given as
YYYY-MM-DD, for example
2016-02-29(the founding date of Atfinity AG).
If you need a date with a time, the format would be
YYYY-MM-DDThh-mm-ss, so a date and a time separated by a
T. For example
If dates are given to Atfinity as text, they always need to be in ISO8601 format. If a function in Atfinity returns a date, it will always be in ISO8601 format. If you want to return anything from Atfinity in a different format you can use FORMAT_DATE to format the output to your liking.