Extra guests?

Last night was the opening ceremony of my photography exhibition at the Singapore Arts House. Five minutes before the speeches, I walked out the building to find my mother, who was a distance away.

I saw this clearer patch of triangular sky above me....above the towering skyscrapers of Singapore.
I mean...triangles in clouds dont occur very often, do they?

I laughed to the sky.

here's the pic with enhanced contrast for your viewing pleasure.