Filter modified pages by year

I’m trying to filter the pages of my website by year. As far as I know I can’t get the creation date of a page but I can get the modification date, which is fine (if not better) for my usecase.
I’m trying to set up a counter that would count the amount of page created this year / the total amount of pages
So I’m trying to filter the pages of my website by modification and it keeps returning 0 here, no matter what I try…

<?php $year = date('Y'); echo $year; echo $page->modified("Y-m-d") ?> <?= $pages->filterBy('modified', '>', '2024-01-01')->filterBy('modified', '<', '2025-01-01')->count(); ?>

Is there a way to do it?
Thanks!

modified returns a timestamp, so you need to compare to timestamps instead of date strings.

You can create a field in your page blueprint that stores the date of page creation.

      created:
        type: date
        default: today
        disabled: true

Then optionally use the blueprint create option:

create:
  fields:
    - created

maybe it will also help you if you want to filter both

php code:

pages('page_id')->children()->listed()->filterBy('modified', 'date >', '0000-00-00 00:00:00');
pages('page_id')->children()->listed()->filterBy('created', 'date >', '0000-00-00 00:00:00');