BANDA ACEH, INDONESIA — Emotional ceremonies were expected across Asia on Thursday to remember the 220,000 people who died two decades ago when a tsunami devastated coastal areas around the Indian Ocean in one of the worst natural disasters in human history. On Dec. 26, 2004, a 9.1-magnitude earthquake off Indonesia’s western tip generated a series of massive waves that pummeled the coastline of 14 countries from Indonesia to Somalia. Beachside memorials and religious ceremonies will be held across Asia in Indonesia, Sri Lanka, India and Thailand, which were the worst hit countries. “I hope we will never experience that