Ma’ayanot Yeshiva High School for Girls holds its annual “Day of Big Ideas,” 9:30 a.m.-12:30 p.m. Shalom Holtz, Ph.D., the keynote speaker, will discuss “The Tenth of Tevet and the Second of Adar: Hurban Bayit Rishon as a National and International Event.” Shirium by faculty. Sponsored by the Brodsky family. 1650 Palisade Ave. (201) 833-4307 or ennisp@maayanot.org.