public function index()
 {
     $userCount = User::count();
     $accountCount = Account::count();
     $now = time();
     // or your date as well
     $startDay = '2016-02-05';
     $your_date = strtotime($startDay);
     $datediff = $now - $your_date;
     $runDay = floor($datediff / (60 * 60 * 24));
     return view('admin.index', ['userCount' => $userCount, 'accountCount' => $accountCount, 'startDay' => $startDay, 'runDay' => $runDay]);
 }