code: public static function now($timezone = null)
      {
          // Get current time as micro unix timestamp
          $now   = explode(' ', microtime());
          $unix  = $now[1];
          $micro = Time::sec($now[0]);
  
          // Compoute JD from unix timestamp
          $jd = ($unix / 86400.0) + static::UJD;
  
          // Add timezone if none present
          if ($timezone == null) {
              $timezone = TimeZone::UTC();
          }
          if (is_string($timezone)) {
              $timezone = TimeZone::parse($timezone);
          }
  
          // Return the new date adding the micro portion and provided timezone
          return static::jd($jd)->add($micro)->setTimezone($timezone);
      }
docs: Creates a new AstroDate from the current date and time
  
  @param  TimeZone|string $timezone
  
  @return static