Resumen: In this reply, the aim of the authors is to correct the calculation errors on solar depression angle and azimuth angle as recognized by Dr. Dalin in his critical review. However, these updated and corrected calculations do not affect the possibility for Antonio Colla of having observed the Noctilucent Cloud (NLC) plausible both in the direction and for the duration he described in his observations. In this reply, the authors offer two different interpretations in this regard. Idioma: Inglés DOI: 10.1177/0959683620913923 Año: 2020 Publicado en: Holocene 30, 8 (2020), 1222-1226 ISSN: 0959-6836 Factor impacto JCR: 2.769 (2020) Categ. JCR: GEOGRAPHY, PHYSICAL rank: 25 / 50 = 0.5 (2020) - Q2 - T2 Categ. JCR: GEOSCIENCES, MULTIDISCIPLINARY rank: 95 / 198 = 0.48 (2020) - Q2 - T2 Factor impacto SCIMAGO: 1.008 - Archeology (arts and humanities) (Q1) - Earth-Surface Processes (Q1) - Paleontology (Q1) - Global and Planetary Change (Q1) - Ecology (Q1)