Portal:Society/Selected anniversaries/September

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• 14 September 1955 - Foundation of the Society of Experimental Test Pilots
• 20 September 1848 - American Association for the Advancement of Science (pictured) created in Pennsylvania
• 21 September 1995 - Nepal Physical Society signed the agreement to be a reciprocal society with the American Physical Society (APS)
• 30 September 1845 - Phi Alpha Literary Society founded in a college dorm room