It was certainly a red sky of delight on Monday evening as stunning sunsets took hold over Northern Ireland.
Dramatic shades of pink, red, purple and orange were captured in cities and rural settings in equal measure. Those enjoying the spectacle were quick to snap the impressive sights.
The incredible views are created by the scattering of light as it enters the atmosphere.
According to the Met Office, a red sky appears when dust and small particles are trapped in the atmosphere by high pressure.
This scatters blue light, leaving only red light to give the sky its striking appearance.
In addition, the sun is very low in the sky at sunrise and sunset which means the sunlight we see has travelled through a much thicker amount of atmosphere.
A red sky at sunset means high pressure is moving in from the west so usually we can expect the next day to be pleasant.