@manu74
can you please explain more in detail.
What are the date format settings for the birthday field and for the now date field?
Are you calculating with the Seblod computation feature or in a custom position override?
What is the formula you are using to calculate the age from now date and birthday date?
How do you save the birthday date field, datetime or timestamp?
I found this calculation code in PHP
here:
// Takes dates like 'yyyy-mm-dd'
function getAge($birth, $now = NULL)
{
$now = new DateTime($now);
$birth = new DateTime($birth);
return $birth->diff($now)->format('%r%y');
}