0d05a445-fabe-431e-bb59-2026df7b9b31 4 6 9 decimal

&[DATE] &[TIME] - &[FILENAME]

j 19 :

a 0.5 : b 1 : Φ π : 13 mat

P3 t 4 π * - 4 π * 4 π * - 0.025 + (range : i 1 t rows range X i el b t i el * a * t i el Φ + cos (1^* eval : Y i el a t i el * b * t i el Φ + sin (2^* eval : 21 line for X Y augment 31 line :

God's Eye watching you

P3 P3 j 1 el P3 j 2 el . 13 red 1 5 mat 2 1 sys

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The Analemma

You must visit the web for many descriptive Analemma photos. In short: Analemma is the observed path of the sun through the year. ... EOT(N) & δ(N) sources not recorded.

L H N xd i 1 N range x i el L i H L - N / * + : for x 21 line :

X 0366366 xd :

N EOT 7.9 2 π * N 3 - (* 365 / sin * 9.9 22 π * N 355 - (* 365 / (* sin * + (- :

EOT i 1366 range vx i el i : vy i el i EOT eval : 21 line for vx vy augment 21 line :

1rst/last day minutes

N Day number ≡

EOT 12 el EOT 3662 el 21 mat 3.3883 - 3.3883 - 21 mat

minmax 16.778 14.616 - 21 mat ≡

EOT minutes ≡

EOT(N) = Equation of Time ...min/day

EOT 0 2 1 sys

δ(n) is the current declination of the sun. Note that the sun declination is related to the local latitude and converted in clock hour provides the local daylight.

N δ 23.44 deg * - sin 360 deg * 365.24 / N 10 + (* 360 deg * π / 0.0167 * 360 deg * 365.24 / N 2 - (* sin * + cos * asin :

Sun i 1366 range vx i el i : vy i el i δ deg / eval : 21 line for vx vy augment 21 line :

box 14.616 - 23.44 16.778 23.44 16.778 23.44 - 14.616 - 23.44 - 14.616 - 23.44 52 mat :

A EOT 2 col Sun 2 col augment :

----------------day explore-----------------=>

J 90 :

XY A J 1 el A J 2 el o 8 red 15 mat :

J A J 1 el A J 2 el Sun J 1 el Sun J 2 el 22 mat 12 mat 90 4.9414 - 4.1476 90 4.1476 22 mat 12 mat

xy Sun J 1 el Sun J 2 el o 8 red 15 mat :

δ(N) = declination of the sun °deg/day

Sun 0 xy 3 1 sys

Analemma

A XY box 4 1 sys