When Add Employee Birth Day I Need to Reflect Direct in Calendar

When Add Employee Birth Day I Need to Reflect Direct in Calendar
In Employee Doctype

Can you explain a bit more about where you are adding the birthday and how you want it to be fetched automatically in the Employee doctype?

I Want to when Create Employee and his Birthday Added
the Day oh his Birthday Assigned to Events and display the Birthdays of this month on Home Desk
I hope I explained it well.

Here’s a sample code: when a user creates a new employee, it will automatically create an Event. If email is configured, it will send a notification at the event time.

Add the code in the server script doctype:

Script Type: DocType Event
Reference Document Type: Employee
DocType Event: After Save

if doc.date_of_birth:
    birthday = frappe.utils.get_datetime(doc.date_of_birth)
    current_year = frappe.utils.now_datetime().year
    today = frappe.utils.now_datetime()

    event_date = birthday.replace(year=current_year)

    if event_date < today:
        event_date = birthday.replace(year=current_year + 1)

    existing_event = frappe.get_all("Event", filters={
        "starts_on": event_date,
        "subject": f"Birthday: {doc.employee_name}"
    })

    if not existing_event:
        frappe.get_doc({
            "doctype": "Event",
            "subject": f"Birthday: {doc.employee_name}",
            "starts_on": event_date,
            "description": f"Celebrating {doc.employee_name}'s birthday",
            "all_day": 1
        }).insert()

Now you can to set the logic and customize it your way according to the scenario.

Thank You