Each relative time can consist of both a date and time portion where you can define either date actions and/or time actions. Within one type of action (either date or time), you cannot use both relative and absolute actions. As a result, you cannot use a relative time action with an absolute time action, and you cannot use a relative date action with an absolute date action.
If you start with an absolute year, such as "@2/18/1972", and follow it with a relative modification, such as "YEAR-5", the editor generates an error when parsing these actions. Likewise, you start with a relative time, such as "HOUR=1", and follow it with an absolute time, such as "#12:25:30:56", the absolute time will override the relative actions.