The blue hour typically occurs for about 40 minutes ... The reason the hue is so overwhelmingly blue is because the Earth's pre-sunrise and post-sunset atmosphere only receives and scatters ...

Twice each day, for about an hour after sunrise and again before sunset ... flattering light. Blue hour is something of a misnomer, as it typically occurs in the 30 to 40 minutes before twilight ...

This time, we're celebrating the 'blue hour', a period shortly before sunrise or after sunset when the sun is below the horizon but still provides enough light to make the sky appear deep blue in ...

With a name like Blue Hour (a.k.a. that moody period just before sunrise), it's not surprising that the long-term plan for the takeout window is to be a late-night option for the neighborhood ...

"My challenge was catching the Milky Way at this time of year is that there are only a few minutes when the Milky Way has risen over the waterfall before the "Blue Hour" from the impending sunrise ...

I began shooting while it was still very dark and exposed so that the lights on the Opera House weren’t over exposed. I continued shooting through the blue hour before being met with this epic sunrise ...