== Custom Date Format Variables ==
[DAYSBETWEEN:2019-11-01:2019-11-10] - this template variable will calculate the number of days between the :: the dates need to be in yyyy-mm-dd format. Template variables can be used for calculation.
Example: [[DAYSBETWEEN:[FIRSTNIGHT:+5 days{%G-%m-%d}]:[CURRENTDATE:{%G-%m-%d}]] will calculate the days between 5 days after check-in and today.
You can use PHP strftime format strings to create custom time formats. Information on PHP strftime strings is available at [http://php.net/manual/en/function.strftime.php]