It's a time-honored tradition.

Meaning

The tradition is very old and respected.

Examples

• John: They still celebrate that festival every year.
• Alice: Yes, <b>it's a time-honored tradition</b> passed down through generations.
• John: I've always admired the rituals involved.
• Alice: Me too, it’s remarkable how much history surrounds it. Truly, <b>it's a time-honored tradition</b>.