Dear Marcello,
Several members of this list have been discussing
the Brazilian National Flag privately. We would like
to know how accurate it is!
The best article I can find is in:
http://www.zenite.nu/04/0804.php
The key paragraph is:
Adotada em 19 de novembro de 1889, seu círculo interno,
em azul, corresponde a uma imagem dessa esfera, inclinada
segundo a latitude da cidade do Rio de Janeiro às 12 horas
siderais (aproximadamente 8 e meia da manhã) de 15 de
novembro de 1889 (Proclamação da República) e cada estrela
representa um Estado da federação.
In English:
Adopted on 19 November 1889, the inner circle, in blue,
corresponds to an image of the globe, set for the latitude
of the city of Rio de Janeiro at 12 sidereal hours
(approximately 8:30 am) on 15 November 1889 (Republic Day)
and each star represents a state of the federation.
Four questions:
1. Do you know of an article that gives a proper
technical description of the projection and so on?
2. Do you know why "12 sidereal hours" was chosen?
[Subscribers to this list understand this time but
it is unusual to use sidereal time in legislation!]
3. Why is Crux shown so close to the ecliptic?
4. Are children in Brazilian schools taught about
these details of the national flag?
Frank H King
Cambridge UK
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