Unknown Birth Time If birth time is unknown, check this box. UTC time offset: Tip: Make sure the UTC time offset is correct. Vedic astrology predictions. If it's wrong, you can change it. NOTE: If birth time is unknown, the report will not include positions or aspects for the Moon, Ascendant, Midheaven, Vertex, or Part of Fortune, nor will it include House positions for any planets. That is why there are no new zodiac signs—and the zodiac sign dates remain the same even as the heavens keep shifting. The NASA star sign changes and new astrology signs would be accurate IF Western astrology was still tied to the position of the constellations.