I see wordpress database on wp_posts table, there are 2 columns to store post date, post_date and post_date_gmt
post_date_gmt store the post date in GMT time. And post_date store post date in user time who create the post. Am I right?
Is there any benefit to store both version of post date on database?
Is it faster to store both version of post date rather than calculate post_date_gmt with user timezone when user want to view post date based on his/her timezone