@staticmethod
def is_julian(year, month, day):
    """This method returns True if given date is in the Julian calendar.

        :param year: Year
        :type y: int
        :param month: Month
        :type m: int
        :param day: Day
        :type day: int

        :returns: Whether the provided date belongs to Julian calendar or not.
        :rtype: bool

        >>> Epoch.is_julian(1997, 5, 27.1)
        False
        >>> Epoch.is_julian(1397, 7, 7.0)
        True
        """
    if (year < 1582 or year == 1582 and month < 10 or year == 1582 and 
        month == 10 and day < 5.0):
        return True
    else:
        return False
