Magento – Magento2 Admin dashboard chart is broken in the all Projects

Your question is somehow unclear but I can give it a try.

In order to redirect to the dashboard use this in a controller

$this->_redirect('adminhtml/dashboard/index');

If that does not work for you then post your code in the question.

Magento filter and search date in format ,Use date php as

    $fromDate = date('Y-m-d'. ' 00:00:00', strtotime($fromDate));
    $toDate = date('Y-m-d'. ' 23:59:00', strtotime($toDate));

or javascript set like as

var from = new Date(year, month, day, 00, 00, 00);
var toDate = new Date(year, month, day, 23, 59, 00);