EURONIA
From ACT Wiki
Interest rate indices - euro.
EURONIA is a euro overnight index average that tracks actual average market euro overnight funding rates each day for settlement that day.
It is a EUR-equivalent of SONIA, the similarly-calculated sterling rate.
EURONIA was formerly an interest benchmark, but was recategorised as an interest rate index in 2022.
EURONIA is not to be confused with EONIA, the Euro Overnight Index Average rate.