Singapore — SGT at UTC+8, regional Asia anchor
Singapore runs on Singapore Time (SGT, UTC+8) year-round. Same offset as KL, Hong Kong, Manila, mainland China. Business hours 9 AM - 6 PM. SGX (Singapore Exchange) trading runs 9 AM - 5 PM SGT. Singapore is the regional Asia HQ for a huge share of multinational APAC operations — Google, Meta, Grab, TikTok, and every major bank base their Asia calendar coordination on SGT.