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Daylight Saving Time (DST) Not Observed in Year 1975
Porto observed Central European Time (CET) all year.
DST was not in use in 1975.
Daylight Saving Time History in Porto
Detailed history for Porto is not available before 1970. Statistics below are based on 1970 onwards.
- Porto first observed Daylight Saving Time in 1977.
- Porto has observed DST for 48 years between 1977 and 2024.
- See Worldwide DST Statistics