Ravnodenstvie: ot solncestoyaniya do solncestoyaniya
22.09.2008 | Astronomicheskaya kartinka dnya

Segodnya — ravnodenstvie, den' raven nochi. Zavtra i kazhdyi den' do sleduyushego ravnodenstviya, noch' budet dlinnee dnya v severnom polusharii Zemli i den' budet dlinnee nochi v yuzhnom polusharii. Ravnodenstvie nastupaet poseredine mezhdu dvumya solncestoyaniyami, kogda razlichie v dline dnya i nochi maksimal'no.