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13. The normal date for autumn equinox (north of the equator) is September 22 (100 days before the end of the year).

Ga5-8 Ga5-9
ο Virginis (182.1) Alchita, Ma Wei (183.1)
'September 19 12h (182.6)
Ga5-10 Ga5-11 (*185)
Minkar (183.7), ρ Centauri (183.9) Pálida (184.6), Megrez (184.9), Gienah (185.1), ε Muscae (185.2)
'21 (264) '22
Ga5-12 Ga5-13 Ga5-14 Ga5-15 Ga5-16
Zaniah (185.9), Chang Sha (186.3) Intrometida (187.4)  Acrux (187.5), γ Com. Berenicis (188.0), σ Centauri (188.1) Algorab (188.5), Gacrux (188.7), γ Muscae (189.0), Avis Satyra (189.3) Asterion (189.5), Kraz (189.7), α Muscae (190.2)
'23 '24 '25 (268) '26 '27
Ga5-17 Ga5-18 (*192) Ga5-19
τ Centauri (190.5), χ Virginis (190.7), ρ Virginis (191.4) Porrima, γ Centauri (191.5) β Muscae (192.5), Mimosa (192.9)
'28 '29 (272) '30
Ga5-20 Ga5-21 Ga5-22 Ga5-23
  ψ Virginis (194.5), Alioth (194.8), Minelauva (195.1), Cor Caroli (195.3)   δ Muscae (196.5), Vindemiatrix (196.8), ξ¹ Centauri (197.1)
'October 1 '2 '3 '4 (277)