Singapore is 1 hour ahead of Jakarta. Singapore uses Singapore Standard Time (SGT, UTC+8) while Jakarta uses Western Indonesia Time (WIB, UTC+7). When it's 12:00 PM in Jakarta, it's 1:00 PM in Singapore.
Neither Singapore nor Indonesia (for Jakarta) observes daylight saving time, so the 1-hour difference remains constant year-round.
Best calling time: 10:00 AM - 7:00 PM Singapore time. This corresponds to 9:00 AM - 6:00 PM in Jakarta, covering standard business hours.
Singapore and Jakarta are neighboring Southeast Asian capitals with extensive business ties. The flight between them takes only 1.5 hours, making same-day business trips common.