Google sheets wrong time

I presume you are referring to the "Submission Date" column in the Google Spreadsheet integration? 

Please note that the submission date and time is dependent on your account's time zone. To have a correct date and time that matches your timezone, please update your account settings.

You will also need to re-integrate your Google Spreadsheet so that the changes on your submission will be reflected to the new spreadsheet. Note: When you remove and re-integrate, a new spreadsheet will be created. 

Let us know if that works. If now, please do provide us more information.