Found here downloadable the Prefectural Order related to Pau Pyrenees airport regulations. 

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Order (fr)


Terminal opening hours from November 13th to December 17th : From Monday to Saturday : 4:45am-11pm (except Thursday, December 6 and Friday, December 7 : 6:am-11pm) I Sunday : 4:45am-11:30am, 4:30pm-11pm (except Sunday, December 17 : 8:30-11:30am, 4:30-11pm)