November 20

Hanauma Bay Nature Preserve, Education Alcove Classroom, 3-4 p.m., free. Arlan Brucal and advisor John Lynham talk “Are seawells ‘Beggar-Thy-Neighbor’? Evidence from property values in Hawaii,” and Flo La Valle and advisor Joanna Philippoff talk “Promoting undergraduate research and citizen science with Our Project in Hawaii’s Intertidal (OPIHI).” (397-5840)

Moanalua 99, 10 a.m.-3 p.m., free. Anywhere between 50-120 vendors will offer their wares at this monthly craft fair. (479-5525)

Moanalua Middle School/Moanalua Gardens Missionary Church, 8 a.m.-1:30 p.m., free. Donate blood and save lives. Pre-registration recommended. (848-4770, bbh.org)

New Hope Leeward, Kapolei Campus, 7 a.m.-1 p.m., free. Donate blood and save lives. Pre-registration recommended. (848-4770, bbh.org)

New Hope Leeward, Waipahu Campus, 7 a.m.-1 p.m., free. Donate blood and save lives. Pre-registration recommended. (848-4770, bbh.org)

Hawaii Doggie Bakery, noon-3 p.m., free. Celebrate Kiinani’s centennial (in dog years) at the bakery with a cake, treats and photos. Instead of gifts, please donate to Hawaiian Humane Society. (783-7380)

Palladium at Ala Wai Golf Clubhouse, 6-9:15 p.m., $5-$8. Take lessons for the first hour, then dance away to swing and other dance styles. (529-8816)

Blaisdell Hawaii Suites, 10:30 a.m.-4:30 p.m., $4.50-$15. Shop 93 tables of vendors selling great buys in vintage aloha shirts, Hawaiian jewelry, art, fashion and more. (ukulele.com/wikiwiki.html)

Kapiolani Bandstand, 2 p.m., free. (922-5331)

Ala Moana Center, Centerstage, 3 p.m., free. (alamoanacenter.com)

Windward Mall, Center Court, noon-1 p.m., free. Enjoy a special appearance by contestants vying to compete in the next Narcissus Queen Pageant. (235-1143)