How do I know spring is here?

Apart from the frantic nest building by the swallows, the frolicking lambs in paddocks, blossom on trees and daffodils doing their thing everywhere? I know its spring because the sun now shines directly onto my computer screen in the mornings which, while lovely, does making working more of a challenge.

It always seems a sacrilege to block the sun out but I just have to, to achieve anything. In about another month the sun is higher and it doesn't affect my ability to work to the same extent.

Yay for spring though!