Comentario citado sobre Nehemías 2:1

the month of Spring is so called because it was during the Springtime that they left Egypt. The Dissenters have claimed that one may not perform the Paschal sacrifice until Spring-time. I have replied to their nonsense elsewhere [comment on Exodus 12: 2] (nevertheless, we must acknowledge that the court did examine whether or not Spring had arrived). Know that in the Hebrew language the months have no proper names. The names that appear in Scripture — like Nisan [Esther 3: 7], Sivan [Esther 8: 9], Kislev [Nehemiah 1: 1], Ṭevet [Esther 2: 16], and Adar [Esther 3: 7] — are all Aramaic. Consequently, Scripture had to tell us, “…this being the month of Nisan” [Esther 3: 7]. The only Hebrew terms that we find are the descriptive terms “Splendor” [I Kings 6: 1], “Mighty” [I Kings 8: 2], and “Wilt” [I Kings 6: 38]. The original rule was that the first month (the month from which the others are counted) was to be reckoned with the coming of the Spring — whether the previous year had twelve or thirteen months being of no concern. However, our ancestors, of blessed memory, added other considerations, in addition to the Spring [Sanhedrin 11b]; and all of their words are true.

the twentieth year This refers to the twentieth year of King Darius, who is identical with Artaxerxes. In Tractate Rosh Hashanah (3a, b), we find that the phrase “the twentieth year” is mentioned twice using similar wording [to teach us that it is speaking of the identical year]. It states below (2:1), “And it came to pass in the month of Nissan of the twentieth year of Artaxerxes, etc.” The years were calculated from the month of Tishrei. It says here, “And it was in the month of Kislev of the twentieth year, etc.” This refers to the Kislev coming after Tishrei. Further down it says (2:1), “And it was in the month of Nissan of the twentieth year, etc.” This refers to the Nissan of the same year. And I cannot explain that they calculated their years from the month of Nissan and that the incident mentioned below: “And it was in the month of Nissan, etc.” occurred before this incident: “And it was in the month of Kislev, etc.” It is true that events [in the Torah] are not necessarily recorded in chronological order. Nevertheless, the chapters indicate that the second chapter took place only because of the events of the first chapter.

from the twentieth year of King Darius, for then he ascended from Babylon, as it is stated (2:1): “Now it came to pass in the month of Nissan in the twentieth year, etc.”