SOLAR CARDS AMSTERDAM - NETHERLANDS
SUMMER SOLSTICE 21 June
Lat = 52° 22' 12,70'' N
Long. = 04° 53' 44,19'' E
Alt. = 0 - 16 mt
The sun rises 04 h 25' 42''
The sun sets 20h 58' 48'' 		T.L. (local constant) = 00h19' 34''
W (hour angle) = ± 55° 51' 50''
Azimut max = ± 130° 33' 57''
Zenit max = 61° 01' 26''
Ho (solar radiation) = 2,347 kw/m2daytime
Arch. Giuseppe Devito







Willebrordus Snellius
Leiden
1580 - 1626


Christiaan Huygens
L'Aia
1629 - 1695