~ All longitude values below should be independently verified by the user ~
Locations within the Isle of Man	Longitude
Isle of Man Astronomical Society Observatory	4° 37.6’ W
Douglas	4° 27’ W
Laxey	4° 24’ W
Ramsey	4° 23’ W
Peel	4° 42’ W
Port St Mary	4° 44’ W
Port Erin	4° 45’ W
Castletown	4° 38’ W