Show Present Date utilizing shortcode

I’m utilizing the under code to show present date in php utilizing shortcodes for Indian time zones:

add_shortcode( 'current_date', 'mth_footer_date2' );
operate mth_footer_date2() {
    ob_start();
    date_default_timezone_set("Asia/Kolkata");
    echo gmdate("jS F Y");
    return ob_get_clean();
}

We have to add [current_date] Shortcode to show present date. This code is displaying date however I feel, this isn’t in Indian Timezone. Please present me such codes to show time in Indian Timezone. I need Date in following format, Sunday, twenty fourth October, 2021.

Additionally present methods to indicate tomorrow date in similar format.