Question

Are rainbows worldwide?

Answer 1

But those aren't true rainbows. ... A rainbow is caused by sunlight hitting water droplets in the air. You typically see a rainbow in the sky opposite the sun after or during a rain shower. When light enters a raindrop, it's refracted, or bent.

Answer 2

$\boxed{\boxed{\textsf{YES}}}$
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One can see rainbow from any part of the Earth if the conditions, for its formation, are $\textit{satisfied.}$

$\textbf{Rainbow}$ is a $\underline\text{meteorological phenomenon}$ which displays $\textsf{arcs of colours}$ in the sky due to the $\textbf{Total Internal Reflection,}$ $\textbf{Refraction}$ and $\textbf{Dispersion}$ of Sun Rays by $\underline\textit{Water Droplets.}$
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There are 7 arcs of colours:

These 7 colours(In chronological order) are :-

1) $\textbf{Violet}$

2) $\textbf{Indigo}$

3) $\textbf{Blue}$

4) $\textbf{Green}$

5) $\textbf{Yellow}$

6) $\textbf{Orange}$

7) $\textbf{Red}$

To show these colours, an acronym used for them is:

$\large\textbf{VIBGYOR}$
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#$\large\textbf{BeBrainly}$