I'm trying to
calculate the Equation of Time (EoT) to determine the difference
between LAN (Local Apparent Noon) and GMT/UT-1 Greenwich Mean
Time. Then I want to plot the EoT curve (a project for later, not
now)The following is the formula I use on my calculator. The formula
gives a "close enough" EoT9.87xsin(2x360(3-81)÷365)-7.67 x
sin(360(3-81)÷365+78.7)=
-4.584625249 (or.... -4 minutes 35.1 seconds...plus or minus)Calc doesn't
give the same answer. Here's the formula in
calc;=9.87*SIN(RADIANS(2*360*(3-81)/365)-7.67*SIN(RADIANS(360*(3-81)/365+78.7)))The
answer it returns is: -2.14883666659093Can you tell me what the correct layout
of the format in calc is?Thank you,Peter
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