I was learning about the blue hour this week.

The blue hour

is the period of twilight each morning and evening when the Sun is a significant distance below the horizon and the residual, indirect sunlight takes on a predominantly blue hue

Down at the Forth shore in December the day felt blue even at lunchtime,

but then again it is so often blue down here, the space and the shore and the river light all playing off each other and merging into not much more than blue,

which is one of the reasons I like to head down here when I can, just to mooch, just to look at the sky and the shore and the absence of stuff,

and even if the light is low I am still grateful that it is not chucking it down with rain, and that although I have to work in an office my job is flexible enough that at some points in the week I can duck away in time to catch what little is left of the light,

blue winter light by the river Forth

and just walk along the shore, and let the soft blue light do its work of seeing off the winter blues.