Hello,

The Java TZDB compiler models transitions in terms of historical transitions and transition rules. All transition rules start one year after the latest year among the unbounded rules in the TZDB database for a given zone.

Reading the docs, I found the following explanation about that extra year:

Also add one more year to avoid weird case where penultimate year has odd offset.

Does anyone know what does it mean and in which cases does it occur?

- Marcos