IOAA 2022, Дневни наблюдения — Задача 5. O9

O8 says two missing stars but requests labels4,5and6; the contradiction is retained explicitly. The supplied solution chart has three red and three green markers. The official key gives O9 as6h20m without a derivation; no additional derivation is invented. The six-page Daytime Obs.pdf contains the same English O5–O9 tasks but has clipped/reflowed figures and stray ccv text in answer boxes. The complete DOCX-derived edition is used; no distinct task is lost. Observation Problems.pdf is byte-identical to Observations Solutions.pdf despite its filename.