The BitMEX .XBTBON8H Index is a 8-hour TWAP of the .XBTBON Premium Rate at BitMEX Index ending at 12:00 UTC from the .XBTBON Index. These values are used for funding rates and are provided 8 hours in advance.
.XBTBON8H Index Historical Values
These are 8-hour snaps of .XBTBON from BitMEX.
The last 100 measurements are available here. More results can be retrieved from the API.