Eratosthenes Equinox (23 sept 2019)

Universidad de Buenos Aires

Fondation La main à la pâte

ERATOSTHENES The circumference of the Earth 23 September 2019 equinox

at noon

The sun is directly overhead the equator.

The angle of the Sun below the vertical is equal to the latitude

Project coordination https://df.uba.ar Contact: Guillermo Mattei https://www.fondation-lamap.org Contact: Eric Vayssié

Social network https://www.facebook.com/groups/107311792629457/ Proyecto Eratostenes

https://www.facebook.com/groups/Eratos/ |Eratosthenes | | Ερατοσθένης| | इररै टटोस्थननिज़ | Contact : Athanasia Zafeiropoulou https://www.facebook.com/groups/333252797304251/ EARTH’S CIRCUMFERENCE MEASUREMENT EXPERIMENT Contact : Hoàng Thị Hiền

Institutional partners http://vigyanprasar.gov.in/scienc e-communication-programs/vipnet/

http://www.parquecielosdelsur.com.ar/

https://astrofanaticos.wordpress.com/

http://www.spaceadhyaan.com

America

Asia

Europe

Aigio Greece 1st High School of Aigio

Bayamรณn Puerto Rico AECM Carribean University

Biên Hòa Việt Nam LTV school for the gifted

Buenos Aires Argentina ENS Nยบ 1

Busteni Romania Scoala Gimnaziala Sanatoriala

Chivilcoy Argentina Parque Cielos del Sur

ComerĂ­o Puerto Rico Escuela Superior Vocacional

Guarne Colombia Grupo Astrofรกnaticos

Hà Đông Việt Nam Trần Hưng Đạo Hà Đông High school

Hà Nội Việt Nam Newton Grammar School

Hải Phòng Anhxtanh Việt Nam Trường THPT Anhxtanh

Hải Phòng LQD Việt Nam Lê Quý Đôn High School

HồChíMinhCity NT ViệtNam Nguyen Trai High School

HồChíMinhCity VAS ViệtNam Vietnam Australia international school

Hyderabad India Space Adhyaan

Ioannina Greece 7th Junior High School of Ionnina

Itajubรก Brazil Universidade Federal de Itajubรก

Lafrançaise France Collège Antonin Perbosc

Mărgineni Romania Gh. Popescu School

Nam Dinh Việt Nam Nguyen Khuyen high school

Petroupoli Greece 4th Junior High School

Rio de Janeiro Brazil

Centro Educacional Nosso Mundo

San Juan Puerto Rico Río Piedras Universidad de Puerto Rico

Thai Binh City Việt Nam Bac Dong Quan high school

Ăšbeda Spain Colegio Salesiano Santo Domingo Savio

Yamunanagar CJC India GSSS Camp Jain Colony

Yamunanagar CVRSC India C V Raman Science Club

Yamunanagar SD India Spring Dales Public School