Valores do fotoperíodo (horas) no 15o dia de cada mês, em função da latitude

Latitude  

Jan Fev Mar Abr Mai Jun Jul Ago Set Out Nov Dez
10o N 11.6 11.8 12.1 12.4 12.6 12.7 12.6 12.4 12.2 11.9 11.7 11.5
  8o N 11.7 11.9 12.1 12.3 12.5 12.6 12.5 12.4 12.2 12.0 11.8 11.6
  6o N 11.8 11.9 12.1 12.3 10.4 12.5 12.4 12.3 12.2 12.0 11.9 11.7
  4o N 11.9 12.0 12.1 12.2 12.3 12.4 12.3 12.2 12.0 12.0 11.9 11.9
  2o N 12.0 12.0 12.1 12.2 12.2 12.2 12.2 12.2 12.1 12.1 12.0 12.0
 
Equador 12.1 12.1 12.1 12.1 12.1 12.1 12.1 12.1 12.1 12.1 12.1 12.1
  2o S 12.2 12.2 12.1 12.1 12.0 12.0 12.0 12.0 12.1 12.1 12.2 12.2
  4o S 12.3 12.2 12.1 12.0 11.9 11.8 11.9 12.0 12.1 12.2 12.3 12.4
  6o S 12.4 12.3 12.1 12.0 11.9 11.7 11.8 11.9 12.1 12.2 12.4 12.5
  8o S 12.5 12.4 12.1 11.9 11.7 11.6 11.7 11.9 12.1 12.3 12.5 12.6
10o S 12.6 12.4 12.1 11.9 11.7 11.5 11.6 11.8 12.0 12.3 12.6 12.7
 12o S 12.7 12.5 12.2 11.8 11.6 11.4 11.5 11.7 12.0 12.4 12.7 12.8
 14o S 12.8 12.6 12.2 11.8 11.5 11.3 11.4 11.6 12.0 12.4 12.8 12.9
 16o S 13.0 12.7 12.2 11.7 11.4 11.2 11.2 11.6 12.0 12.4 12.9 13.1
 18o S 13.1 12.7 12.2 11.7 11.3 11.1 11.1 11.5 12.0 12.5 13.0 13.2
 20o S 13.2 12.8 12.2 11.6 11.2 10.9 11.0 11.4 12.0 12.5 13.2 13.3
 22o S 13.4 12.8 12.2 11.6 11.1 10.8 10.9 11.3 12.0 12.6 13.2 13.5
 24o S 13.5 12.9 12.3 11.5 10.9 10.7 10.8 11.2 11.9 12.6 13.3 13.6
 26o S 13.6 12.9 12.3 11.5 10.8 10.5 10.7 11.2 11.9 12.7 13.4 13.8
 28o S 13.7 13.0 12.3 11.4 10.7 10.4 10.6 11.1 11.9 12.8 13.5 13.9
 30o S 13.9 13.1 12.3 11.4 10.6 10.2 10.4 11.0 11.9 12.8 13.6 14.0
 32o S 14.0 13.2 12.3 11.3 10.5 10.0 10.3 10.9 11.9 12.9 13.7 14.2
 34o S 14.2 13.3 12.3 11.3 10.3   9.8 10.1 10.9 11.9 12.9 13.9 14.4
 36o S 14.3 13.4 12.4 11.2 10.2   9.7 10.0 10.7 11.9 13.0 14.0 14.6
 38o S 14.5 13.5 12.4 11.1 10.1   9.5   9.8 10.6 11.8 13.1 14.2 14.8
 40o S 14.7 13.6 12.4 11.1   9.9   9.3   9.6 10.5 11.8 13.1 14.3 15.0