I'm using the following snipped to find the begin and end of several time periods in Joda. The little devil on my left shoulder says thats the way to go... but I dont believe him.

Could anybody with some joda experience take a brief look and tell me that the little guy is right?

(It will be only used for UTC datetime objects)

Thank you!

/* Year */
private static DateTime endOfYear(DateTime dateTime) {
    return endOfDay(dateTime).withMonthOfYear(12).withDayOfMonth(31);
}

private static DateTime beginningOfYear(DateTime dateTime) {
    return beginningOfMonth(dateTime).withMonthOfYear(1);
}

/* Month */
private static DateTime endOfMonth(DateTime dateTime) {
    return endOfDay(dateTime).withDayOfMonth(dateTime.dayOfMonth().getMaximumValue());
}

private static DateTime beginningOfMonth(DateTime dateTime) {
    return beginningOfday(dateTime).withDayOfMonth(1);
}

/* Day */
private static DateTime endOfDay(DateTime dateTime) {
    return endOfHour(dateTime).withHourOfDay(23);
}

private static DateTime beginningOfday(DateTime dateTime) {
    return beginningOfHour(dateTime).withHourOfDay(0);
}

/* Hour */
private static DateTime beginningOfHour(DateTime dateTime) {
    return dateTime.withMillisOfSecond(0).withSecondOfMinute(0).withMinuteOfHour(0);
}

private static DateTime endOfHour(DateTime dateTime) {
    return dateTime.withMillisOfSecond(999).withSecondOfMinute(59).withMinuteOfHour(59);
}