public static long betweenDay(Date beginDate, Date endDate, boolean isReset) {
		if (isReset) {
			beginDate = beginOfDay(beginDate);
			endDate = beginOfDay(endDate);
		}
		return between(beginDate, endDate, DateUnit.DAY);
	}
@Test
	public void betweenDayTest() {
		for (int i = 0; i < 1000; i++) {
			final String datr = RandomUtil.randomInt(1900, 2099) + "-01-20";
			final long betweenDay = DateUtil.betweenDay(
					DateUtil.parseDate("1970-01-01"),
					DateUtil.parseDate(datr), false);
			assertEquals(Math.abs(LocalDate.parse(datr).toEpochDay()), betweenDay);
		}
	}