Align Header For inline editing grid

How to set align header & content to left for grid with type Date

Hello.

There is no such native configuration but you are able to change the position of the datePicker popup manually after the editor opening. Something like:

grid.events.on("afterEditStart", function (id, col, colId, ev) { //event triggering for the cell edit
        setTimeout(function () { //wait till the editor renders
            var rect = document.querySelector(".dhx_cell-editor").getBoundingClientRect();//get the cell coordinates
            el = document.querySelector(".dhx_popup") //get the calendar popUp element
            el.style.left = rect.left + 'px'; //set the needed position
        }, 50)
})

Here is the example:
https://snippet.dhtmlx.com/hh1v05z1