Rabbi Nissan Aharon Tikochinsky, the head of the Etz Chaim Yeshiva, died on Tuesday in Jerusalem at the age of 90.

His funeral left from the Etz Chaim Yeshiva and Talmud Torah in Jerusalem, at one o'clock in the afternoon. He was buried in the Sanhedria Cemetery next to his father, Rabbi Yechezkel Michel Tikochinsky (sometimes spelled Tukichinsky), author of the Gesher Hachaim volumes on Jewish mourning and author-editor of the widely used Luach Eretz Yisrael, a detailed yearly calendar of prayer times and time-dependent details of Jewish observance based on the laws and customs of Jerusalem.

Born in 1922, Rabbi Nissan Aharon attended Etz Chaim elementary yeshiva, as did many Jerusalem sages in their youth, including Rabbi Avraham Shapira of Merkaz HaRav, until age 14, when he left home to study at the famed Lomza Yeshiva in Petach Tikvah. He was later appointed to head Etz Chaim in Jerusalem, a position that he kept for close to seventy years.

In addition in being known for taking a close, personal interest in each of the hundreds of students studying at the various Etz Chaim institutes and personally overseeing every member of the staff as well as travelling worldwide to lecture on Torah, Rabbi Nissan Aharon authored Ir HaKodesh V'Hamikdash, updated the Luach each year and published the manuscripts of his great-grandfather, Rabbi Shmuel Salant, one of the founders of Etz Chaim and longtime chief rabbi of Jerusalem. Rabbi Salant died on the 29th of Av (August 16) in 1909, and is buried on the Mount of Olives.

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