Working hours Aquarium working hours SUMMER WORKING HOURS (1 April – 31 October) open daily: 9 am – 7 pm WINTER WORKING HOURS (1 November – 31 March) open daily: 9 am – 5 pm Open on holidays, except Easter Sunday, Christmas and New Year’s Day. Cafe working hours SUMMER WORKING HOURS (1.4. – 30.09.) MON-THU, SAT-SUN 8 am – 9 pm, FRI 7 am – 9 pm WINTER WORKING HOURS (1.10. – 31.3.) MON-THU, SAT-SUN 8 am – 8 pm, FRI 7 am – 8 pm Open on holidays, except Easter Sunday, Christmas and New Year’s Day.