About Roseland Observatory
the sun rises due east at 7.00am bst - 6.00am gmt although longitude and the equation of time also need to be taken into account. the difference between the two is due to refraction ... Read more
the sun rises due east at 7.00am bst - 6.00am gmt although longitude and the equation of time also need to be taken into account. the difference between the two is due to refraction ... Read more