Agan ha-saḥar
Subtitle: berur halakhah u-masḳanot devarim odot meḳomo shel ḳaṿ ha-taʾarikh she-bo hatḥalat minyan yeme ha-shavuʻa u-sheʻotehem ʻal kadur ha-ʾarets ṿe-ʻiyunim be-ʻinyene hilkhot ḳidush ha-ḥodesh
Publisher: Kerem
Published: 1954
Place of publication: New York
Language: heb
Number of pages: 490
Subjects: Time (Jewish law); International Date Line; Jewish Chronology
Notes: Added t.p.: Agan ha-sahar; a treatise on various astronomic problems in Jewish law...

Preface in English and Hebrew.