What is it?     it stands for Date Meets Zip Code; 

In USA:  The date “M-DD-YY” & 5 digit zip code match

• • • The month “1” to “9” ZIP code starts with a “1” to “9”

    • The second/Third digit  01 to 31   (Day of the month)

    • Fourth/Fifth digit  is the year

Example: The date 2/16/23 and The zip code 21623 Match - Church Hill, MD

On the hand cancellation stamp both are shown  - as shown in the picture here