[THE APRIL 1921 LUNAR ECLIPSE] Takvim-i Sâl [Three yearbooks of 1917, 1919, 1921]: 27 Cumadü’l-ûla 1335 - 9 Cumade'l-âhir 1336 (1919) - 19 Cümadeluhra 1337 - 30 Cümadeluhra 1338 (1921) – 6 Cumadü'l-ûla 1333 - 15 Cumadü'l-ûla 1334 (1917)

HILMI, MÜNECCIMBASI HÜSEYIN (?-1924). Matbaa-yi Osmânî, Istanbul, AH 1333-1335-1337 = [1917-1919-1921]. Original pink, greenish and yellow illustrated wrappers with astronomical instruments such as almucantar. 12mo. (12 x 9 cm). In Ottoman script (Old Turkish with Arabic letters). 3 books: (64 p., 64 p., 64 p.), ills. Occasional foxing and creasing on covers, a tear on the second and third front wrappers, chipped extremities of pages of the second. Overall, good copies.   Lithographed editions. First and only editions of these three yearbooks together including Hijri and Gregorian calculations, days, seasonal weather forecasts, important storms, times for prayer (namaz), the phases of the Moon, and solar and lunar eclipses prepared for public use in the periods of WW1 and the Occupation of Constantinople. The last yearbook has a lithographed illustration of the April 1921 Lunar Eclipse, according to the information by Hilmi, which only can be observed from Africa and South America. The