This image was taken at Granton looking across the Derwent River at Bridgewater Bridge at Blue Hour. 60D 35mm F5.6 1/250
Never really looked Sundar, it was too dark to level the camera at the time and I was going through some of my 2018 image files and come across this one. so I just put it up.
This was one of those warm clear nights and I accidentally timed it right, it did not last very long and we do not have very much air pollution, except what comes out of parliament house in Hobart.
Caladina," Blue Hour in the UK" and this is what I come up with "Blue Hour: A time between dusk and dawn when you are lost in the moment, anything is possible and the concept of time ceases to exist". You should be heading into summer there, so take your partner, grab a Coffee, Tea or Wine and go sit in a park, garden or front porch FOR A timeless moment.
I have occasionally seen bluish scenery in the past but not so intense as the one you have captured. This is one from sometime ago around the time frame you have described.
Sundar, I think you might have to have waited for the sun to go down a little more, it does not last long.