new DateTimeType().zonedDateTime.now().plusDays(1)
works fine - thank you!
Could you please also correct the documentation at
(https://www.openhab.org/docs/configuration/actions.html#ephemeris)
It still says
…This action is broken in OH 2.5.x. Use getNextBankHoliday(, ) instead by replacing with ZonedDateTime.now().plusDays()