A-M baby

Task/Horizontal-sundial-calculations/Python/horizontal-sundial-calculations.py

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+from __future__ import print_function
+import math
+try: raw_input
+except: raw_input = input
+
+lat = float(raw_input("Enter latitude       => "))
+lng = float(raw_input("Enter longitude      => "))
+ref = float(raw_input("Enter legal meridian => "))
+print()
+
+slat = math.sin(math.radians(lat))
+print("    sine of latitude:   %.3f" % slat)
+print("    diff longitude:     %.3f" % (lng-ref))
+print()
+print("Hour, sun hour angle, dial hour line angle from 6am to 6pm")
+
+for h in range(-6, 7):
+  hra = 15 * h
+  hra -= lng - ref
+  hla = math.degrees(math.atan(slat * math.tan(math.radians(hra))))
+  print("HR=%3d; HRA=%7.3f; HLA=%7.3f" % (h, hra, hla))