Change renewal time on subscription

I’m using Woo commerce with subscriptions, latest versions.

I’m trying to set a renewal time on a subscription to 11pm straight after its been created.
I keep getting an internal server errors and not so familiar with debugging them, $debug is set to true in wp-config.

I’m using snippets to insert the action hook.

Is this the correct approach to this?

add_action( 'woocommerce_checkout_subscription_created', 'change_renewal_day', 10, 3 );

function change_renewal_day ($subscription, $order, $recurring_cart) {
	if($subscription->can_date_be_updated('next_payment')){
		$newdate = new DateTime(strtotime($subscription->get_date('nextpayment')));
		$newdate.settime(23,00);
		/*
		$subscription::update_dates(
			array('start' => $subscription::get_date('start'),
				 'trial_end'=>$subscription::get_date('trialend'),
				 'next_payment'=>$newdate->format('Y-m-d H:i:s'),
				 'last_payment'=>$subscription::get_date('last_payment')
				 )
		);*/
	}
}