code: def to_jd(year, month, day):
      "Retrieve the Julian date equivalent for this date"
      return day + (month - 1) * 30 + (year - 1) * 365 + floor(year / 4) + EPOCH - f to_jd(year, month, day):
      "Retrieve the Julian date equivalent for this date"
      return day + (month - 1) * 30 + (year - 1) * 365 + floor(year / 4) + EPOCH - 1
docs: Retrieve the Julian date equivalent for this date