Date problem when transferring to Google Contacts

I have built an 'n8n flow' that transfers/updates/deletes contact data from Ninox to 'Google Contacts'. I had the problem that the date of birth was always saved in Google Contacts with one day less.
To correct this error, you have to use the function correctedDate().
Example: let Body := {vBirthDate:correctedDate(BirthDate)}
This will now save it correctly in Google Contacts.
This is certainly helpful in general when using http request.
Attached is a screenshot of the n8n flow for those interested: