Global InformationAste Nagusia information
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| Aste Nagusia | |
|---|---|
 Marijaia in Teatro Arriaga, 2005 | |
| Type | Cultural |
| Significance | Assumption of Mary |
| Celebrations | Parties |
| Date | Nine days starting the first Saturday after 15 August |
| 2023 date | 19 – 27 August |
| 2024 date | 17 – 25 August |
| 2025 date | 16 – 24 August |
| 2026 date | 22 – 30 August |
| Frequency | Annual |
Aste Nagusia or "The Great Week" (Basque: Bilboko Aste Nagusia, Spanish: Semana Grande de Bilbao) is the main festival of Bilbao, Basque Country, Spain, which is celebrated annually over 9 days beginning on the first Saturday following 15 August, the festivity of the Assumption of Our Lady.