JST to HST time converter
Hawaii Time (HST) is 19 hours behind Japan Standard Time (JST) all year round. Use the grid below to line up Tokyo and Honolulu: drag the cursor across the day, and working hours (9 AM–5 PM) are highlighted in every row so you can spot a slot that suits both sides.
Right now it is 18:43 JST in Tokyo and 23:43 HST in Honolulu.
Tue, Oct 20
Tokyo home
18:43
Tue, Oct 20 · UTC+9
Honolulu
23:43 -1
Mon, Oct 19 · UTC-10
2/10 zones · drag the tape, scroll sideways or use the arrow keys; Home jumps back to now.
JST to HST: frequently asked
What is the time difference between JST and HST?
Hawaii Time (HST) is 19 hours behind Japan Standard Time (JST) all year round.
What time is 9 AM JST in HST?
9:00 AM JST is 2:00 PM HST the previous day.
When do working hours overlap between Tokyo and Honolulu?
Standard 9:00 AM–5:00 PM working hours never overlap. The closest fit is 4:00 AM JST, which is 9:00 AM HST.