https://www.longislandsigs.org/event-details/annual-distinguished-alumni-dinner 2026-10-17 https://static.wixstatic.com/media/ae33fb_fa729468e79a4b548fd32769eff19683~mv2.png Annual Distinguished Alumni Dinner https://www.longislandsigs.org/event-details/sigma-chi-alumni-reunion-weekend 2026-10-17 https://static.wixstatic.com/media/ae33fb_efd44074c562456abee0792597a833ea~mv2.png Sigma Chi Alumni Reunion Weekend https://www.longislandsigs.org/event-details/day-of-service-and-fellowship 2026-10-17 https://static.wixstatic.com/media/ae33fb_e9023dc723a34bdfa9af62ebdaf8e857~mv2.png Day of Service and Fellowship