Calcutate the coordinates

Draw the Analemma

Draw the ellipse

Drawing the ellipse in Mumbai 

Data
Latitude : 19.12
Longitude : -72.85
Zone meridian : -82.50
Gnomon Height : 2m
E/W-SemiAxis : 2m
OA = 2.00 m ( E/W-SemiAxis )
OB = 0.65 m ( N/S-SemiAxis )
Focus c = OF = 1,89 m
String Length 2a+2c = 7,78 m