@Override public int compareTo(final TimeSection SECTION) {
        if (getStart().isBefore(SECTION.getStart())) return -1;
        if (getStart().isAfter(SECTION.getStart())) return 1;
        return 0;
    }
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