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 ...

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 ...

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 ...

"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 ...