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Daylight Saving Time (DST) Not Observed in Year 1975
Viseu observed Central European Time (CET) all year.
DST was not in use in 1975.
Daylight Saving Time History in Viseu
Detailed history for Viseu is not available before 1970. Statistics below are based on 1970 onwards.
- Viseu first observed Daylight Saving Time in 1977.
- Viseu has observed DST for 49 years between 1977 and 2025.
- See Worldwide DST Statistics