def METHOD_NAME(self):
    # https://calendariohispanohablante.com/2020/calendario-guatemala-2020.html
    dt = (
        "2020-01-01",
        "2020-04-09",
        "2020-04-10",
        "2020-04-11",
        "2020-05-01",
        "2020-06-29",
        "2020-08-15",
        "2020-09-15",
        "2020-10-20",
        "2020-11-01",
        "2020-12-25",
    )
    self.assertHoliday(dt)