April 3rd is National Find-A-Rainbow Day.
A rainbow is an optical and meteorological phenomenon that is caused by both reflection and refraction of light in water droplets in Earth’s atmosphere, resulting in a spectrum of light appearing in the sky. It takes the form of a multicoloured arc. Rainbows caused by sunlight always appear in the section of sky directly opposite the sun. 
A rainbow in the Eastern sky,
The morrow will be fine and dry.
A rainbow in the West that gleams,
Rain tomorrow falls in streams.
Rainbows are a beautiful, naturally occurrences that symbolize:
- good luck
Today, look for a rainbow or look for beauty and hope in the world around you.