Honolulu to Sydney Time

Honolulu (United States) is a global financial and tech hub, with key industries in technology, finance, healthcare, and entertainment. Sydney (Australia) is a stable, resource-rich economy in the Asia-Pacific region, known for mining, agriculture, finance, and tourism. With a 20-hour time difference, professionals frequently schedule cross-border calls between these two cities for international trade, remote team collaboration, and client meetings.

Scheduling Meetings Between Honolulu and Sydney

With Sydney 20 hours ahead of Honolulu, there is minimal overlap in standard business hours. Most teams alternate meeting times to share the burden of early-morning or late-evening calls fairly. US business hours typically run 9 AM–5 PM, with a culture that values punctuality and efficiency. Australian work culture values work-life balance, with typical hours of 9 AM–5 PM and flexible arrangements common. Consider recording meetings for those who can't attend live, and use shared documents for async collaboration.

Daylight Saving Time Considerations

Sydney observes Daylight Saving Time (AEST/AEDT), while Honolulu stays on HST year-round. When Sydney switches to daylight time, the effective time difference shifts by 1 hour. This typically happens in spring and fall, and the exact dates vary by country. If you have recurring cross-timezone meetings, recalculate the schedule after each DST transition.

HST (HST) stands for the timezone used in Honolulu, United States (UTC-10). AEST (AEST/AEDT) is the timezone used in Sydney, Australia (UTC+10). Honolulu is 20 hours behind Sydney.

To convert HST to AEST, add 20 hours to HST time. For example, HST 9:00 AM = AEST 5:00 AM.