Hi! I hope you are having a swell Wednesday! Thanks for reaching out and for your patience! You have reached the right place for help with changing the date and time on polycom phones. Here is a great link that includes the steps on how to change the date and time. https://comca.st/2wsKjLF For further assistance, please send me a private message by clicking on my handle (Comcast_Gabe) providing me with your name, address, and account number or phone number associated with the account.