Belgrade, 2006

Belgrade, Institute for educational publishing, 2006

(44° 49′ 00″ N,  20° 27′ 22″ E)

Zavod 2Fig. 1. Assistant Mr Aleksandar Petrović (Faculty of Geography, Belgrade), during the installation of the sundial

21 09 2007 ravnodnevicaFig. 2. Autumnal equinox 2007 – it is not perfect: the shadow node should move along the projection of the celestial equator