Item added by C# not show in default view in Sharepoint Calendar

I have a code to create new item to SharePoint Calendar

using (var context = new ClientContext(".......")
                {
                    Credentials = new SharePointOnlineCredentials(".....", secPass)
                })
                {
                    var calendarList = context.Web.Lists.GetByTitle("Calendar");
                    var itemCreateInfo = new ListItemCreationInformation();
                    var item = calendarList.AddItem(itemCreateInfo);
                    item["UID"] = Guid.NewGuid();
                    item["Title"] = "New Event";
                    item["Description"] = "New Event created using SharePoint Object Model";
                    item["Location"] = "First Floor";
                    item["EventDate"] = DateTime.Now;
                    item["EventType"] = 0;
                    item["EndDate"] = DateTime.Now.AddHours(2);
                    item["Category"] = "会議";
                    item["fAllDayEvent"] = false;
                    item["TimeZone"] = +7;
                    item["Author"] = context.Web.EnsureUser(".....");
                    item.Update();

                    context.ExecuteQuery();
                }

Item was added successful to SharePoint Calendar, i checked it in ".../sites/siteCon/_layouts/15/viewlsts.aspx?view=14". But i can't see this in default view of calendar.

Any suggest for me?