Convert ICT to HST — Time Difference Between Indochina Time and Adak

How to Convert ICT to HST

Drag the slider on the ICT timeline to pick your time — the HST time updates instantly. You can also click the time display to type a specific hour or pick one from the 15-minute interval dropdown, and use the date picker to check a different day.

What Is the Time Difference Between ICT and HST?

Adak (HST) is 17 hours behind Indochina Time (ICT). To convert, subtract 17 hours — for example, 9:00 AM ICT is 4:00 PM (previous day) HST.

ICT to HST Quick Reference

ICT to HST Meeting Planner

Use the color-coded table above to find overlapping work hours between Ho Chi Minh City and Adak. Amber rows mark daytime hours — pick a slot that falls in amber on both sides for a meeting that works for everyone.

Why Trust This ICT to HST Converter?

Timezoney uses the IANA Time Zone Database — the same source that powers your phone and computer — so every conversion handles daylight saving transitions and half-hour offsets automatically.