A small code snippet to dynamically change the price based on products ids and on date.
Adjust the snippet to your needs and copy the functions.php of your child theme
Code
add_filter('woocommerce_get_price','wpslash_woofood_change_price_conditionally', 10, 2);
add_filter('woocommerce_get_regular_price','wpslash_woofood_change_price_conditionally', 10, 2);
add_filter('woocommerce_get_sale_price','wpslash_woofood_change_price_conditionally', 10, 2);
function wpslash_woofood_change_price_conditionally($price, $productd){
$product_ids_on_sale = array(220,230,240,250); //specify product ids to apply the condition on price
if(in_array($productd->get_id(), $product_ids_on_sale))
{
if(current_time("Y-m-d") == "01-01-2020")
{
return $price*2;
}
}
return $price;
}