Chester County Astronomical Society

International Day of Light

Saturday, May 10, 2025

Event

A UNESCO event to "celebrate" LIGHT. The focus of our program will be to educate visitors about the EMS. Using Hydrogen-alpha, white ligh telescopes  and spectroscope we will observe the light from our sun. A short discussion from 11:30-12:15 will introduce and inform visitors about the nature of light, both visable and invisble.

Date: Saturday, May 10, 2025

Time: 10:30 a.m. - 2 p.m. Eastern

Location: Rachel Kohl Community Library
687 Smithbridge Rd
Glen Mills, PA 19342

Information for Visitors

Location Details

Rachel Kohl Community Library
687 Smithbridge Rd
Glen Mills, PA 19342
(click to get directions)
check weather forecast

Event Report

Comments and anecdotes about the event:
Best observing day this year.

UPCOMING EVENTS

Sat 4/11/2026
10 a.m. - 12:30 p.m. Eastern 		Downingtown Library Solar Downingtown Library
122 Wallace Ave, Downingtown, PA 19335 Downingtown, PA
Fri 4/17/2026
8 p.m. - 10 p.m. Eastern 		BRANDYWINE RED CLAY ALLIANCE NIGHT SKY OBSERIVNG Brandywine Red Clay Alliance
1760 Wawaset Road West Chester, PA
Tue 4/21/2026
1:30 p.m. - 3:30 p.m. Eastern 		Middletown Free Library Solar Tuesdays Middletown Free Library
464 South Old Middletown Rd Media, PA
Fri 4/24/2026
8 p.m. - 10 p.m. Eastern 		MATHER PLANETARIUM NIGHT SKY OBSERVING Mather Planetarium
750 S CHURCH ST WEST CHESTER, PA