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δ
Sun
=
arcsin
[
sin
(
-
obliq
(Earth)
)
⋅
cos
(
360
o
Yr
tropical
⋅
(
N
+
10
)
+
360
o
π
⋅
Ecc
(Earth)
⋅
sin
(
360
o
Yr
tropical
(
N
-
2
)
)
)
]
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