serendipitous

Serendipitous is an adjective that describes accidentally being in the right place at the right time, like bumping into a good friend in some unusual location, or finding a hundred dollar bill on the ground.

The root of serendipitous comes from the fairy tale "The Three Princes of Serendip," in which three princes make one lucky and surprising discovery after another. A serendipitous moment happens by accident, usually when you’re doing something completely unrelated, like digging a hole in your yard to bury your hamster and finding a treasure chest of jewels. That’s a sad but serendipitous funeral.

Definitions of serendipitous
1

adj lucky in making unexpected and fortunate discoveries

Synonyms:
lucky
having or bringing good fortune