public void checkForTimeAndDate(final ZonedDateTime DATE_TIME) {
        if (days.contains(DATE_TIME.getDayOfWeek())) { checkForTime(DATE_TIME.toLocalTime()); }
    }
Checks if the section days contains the day of week of the given ZonedDateTime
object and if the section contains the time itself. With this one can react if
a time "enters"/"leaves" a section.
@param DATE_TIME
src/main/java/eu/hansolo/tilesfx/TimeSection.java