https://www.php.net/manual/tr/datetimeimmutable.setdate.php
PHP: DateTimeImmutable::setDate - Manual
phpmanual
https://www.php.net/manual/en/intlcalendar.setdate.php
PHP: IntlCalendar::setDate - Manual
phpmanual
https://www.codecademy.com/resources/docs/javascript/dates/setDate
JavaScript | Dates | .setDate() | Codecademy
Changes the day of the month according to local time.
javascriptdatescodecademy
https://www.php.net/manual/uk/datetimeimmutable.setdate.php
PHP: DateTimeImmutable::setDate - Manual
phpmanual
https://www.php.net/manual/es/intlcalendar.setdate.php
PHP: IntlCalendar::setDate - Manual
Establece un campo de fecha
phpmanual
https://www.php.net/manual/en/datetime.setdate.php
PHP: DateTime::setDate - Manual
phpdatetimemanual
https://www.php.net/manual/uk/intlcalendar.setdate.php
PHP: IntlCalendar::setDate - Manual
phpmanual
https://www.php.net/manual/ru/datetimeimmutable.setdate.php
PHP: DateTimeImmutable::setDate - Manual
phpmanual