Source

File: wp-admin/includes/class-wp-privacy-requests-table.php

protected function get_timestamp_as_date( $timestamp ) {
		if ( empty( $timestamp ) ) {
			return '';
		}

		$time_diff = time() - $timestamp;

		if ( $time_diff >= 0 && $time_diff < DAY_IN_SECONDS ) {
			/* translators: %s: Human-readable time difference. */
			return sprintf( __( '%s ago' ), human_time_diff( $timestamp ) );
		}

		return date_i18n( get_option( 'date_format' ), $timestamp );
	}