The National Day is a day picked by the participating country, to offer activities for cultural exchanges in the pavilion or in the Expo site.
2
2008年7月29日：美国航空航天局50周年庆。
50th Anniversary of NASA -july 29th, 2008.
3
作为首个举办国家馆日的非洲国家，塞拉利昂共和国于上周五在上海世博会非洲联合馆内举行了本国馆庆活动。
As the first African state to hold National Pavilion day, the Republic of Sierra Leone celebrates its Pavilion day on Friday inside the Joint-Africa Pavilion at the Shanghai World Expo Site.
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