Bidspirit auction | Lot of 2 Important astronomy

Lot of 2 Important astronomy Seforim: Hayoman - Bain Hashamasos. HaYomem BeKadur HaAretz and Chazon Ish Kuntress 18 Sha'ot – A Polemic on the International Date Line 1. Sefer HaYomem BeKadur HaAretz, ”which resolves the question of the location of the Jewish Date Line… and establishes the days of the week and Shabbat around the world”. Written by Rabbi Yechiel Michl Tokatchinsky, Jerusalem 1943. 2. Sefer Bein HaShmashos, with time charts. Rabbi Michael Tokatzinski. Jerusalem, 1929. Condition: Very fine condition.