Date Format- Alert Message is dispalyed in inappropriate format

Log in as EE on Stage
User name: hspl6611
Password: Password@1
Company: UK Benefits for Hspl

-Go to My benefits
-Click on Medicaid
-Go to Medicaid Effective Date , try to enter alphabetes
-Observe alert message

*Actual Result :Alert message is displayed as "Date should be displayed in mm/dd/yyyy format" ,Which is inappropriate format.

*Expected Result: Alert message should be displayed as "Date should be displayed in yyyy/mm/dd format"

NOTE: Same problem is occurring for all the pages