Snippet to display the Simple Date in Cart, Checkout and Thank you page and Date Range in Product Page. ESTIMATED DELIVERY DATE PLUGIN FOR WOOCOMMERCE - https://www.pluginhive.com/product/estimated-delivery-date-plugin-woocommerce/

functions.php

/**
 * Snippet to display the Simple Date in Cart, Checkout and Thankyou page and Date Range in Product Page.
 * Created at : 05 Oct 2018
 * Updated at : 05 Oct 2018
 * PluginHive Plugins : https://www.pluginhive.com/plugins/
 * Gist Link : https://gist.github.com/varun-pluginhive/f8b76ab1d1b1e07b6a7fe26d993f1e4c
 */

// Cart and Checkout Page
add_filter( 'xa_estimated_delivery_cart_checkout_page_html_formatted_date', function($html_date){

	$date_range_seperator 	= '-';				// Date Range Seperator
	$date_to_display 		= 1;				// O for Lower Range, 1 for Higher range
	$cart_page_text 		= 'Estimated Delivery';


	$html_date_arr = explode( "</td></tr>", $html_date );
	if( ! empty($html_date_arr[0]) && ! empty($cart_page_text) ) {
		$html_date_arr = array_map( 'trim', explode( $cart_page_text.'">', $html_date_arr[0]) );
		if( ! empty($html_date_arr[1]) ) {
			$date_range = $html_date_arr[1];
			$date_arr = array_map( 'trim', explode( $date_range_seperator, $date_range ) );
			if( ! empty($date_arr[$date_to_display]) ) {
				$html_date = str_replace( $date_range, $date_arr[$date_to_display], $html_date );
			}
		}
	}
	return $html_date;
} );

// Thankyou Page
add_filter( 'xa_estimated_delivery_thank_you_page_html_formatted_date', function($text){
	$date_range_seperator 	= '-';				// Date Range Seperator
	$date_to_display 		= 1;				// O for Lower Range, 1 for Higher range
	
	$date_arr = array_map( 'trim', explode( $date_range_seperator, $text) );
	! empty($date_arr[$date_to_display]) && $text = $date_arr[$date_to_display];
	return $text;
});