Christmas comes but once a year

"Christmas comes but once a year"کی تعریف اور معنی

christmas comes but once a year

used to imply that some things are rare or happen only on special occasions, and so one should appreciate and make the most of these special moments while they last

Proverb

Example

I know it's expensive, but going on a vacation with my family is something that we can only do once in a while, like Christmas comes but once a year, so we should make the most of it.