Collection of Date/Time helpers

dateHelpers.groovy

static boolean isBetween(String start, String end) {
    def sdf = new SimpleDateFormat("HH:mm")

    def startCalendar = Calendar.getInstance()
    startCalendar.setTime(sdf.parse(start))

    def endCalendar = Calendar.getInstance()
    endCalendar.setTime(sdf.parse(end))

    def currentCalendar = Calendar.getInstance()
    currentCalendar.setTime(sdf.parse(sdf.format(new Date())))
    return currentCalendar.after(startCalendar) && currentCalendar.before(endCalendar)
}

static boolean isWeekday() {
    int dayOfTheWeek = Calendar.getInstance().get(Calendar.DAY_OF_WEEK)
    return dayOfTheWeek != Calendar.SATURDAY && dayOfTheWeek != Calendar.SUNDAY
}