Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Date | Constituency | Gain | Loss | Note |
| --- | --- | --- | --- | --- |
| 30 May 1963 | Dublin North–East | Fine Gael | Fine Gael | Paddy Belton (FG) holds the seat vacated by the death of his brother Jack Belton (FG) |
| 27 October 1963 | Dublin South–East | Labour Party | National Progressive Democrats | Noël Browne (NPD) disbands the National Progressive Democrats and joins the Labour Party |
| 27 October 1963 | Roscommon | Labour Party | National Progressive Democrats | Jack McQuillan (NPD) disbands the National Progressive Democrats and joins the Labour Party |
| 27 October 1963 | Dublin County | Labour Party | Independent | Seán Dunne (Ind) joins the Labour Party |
| 19 February 1964 | Cork Borough | Fianna Fáil | Fianna Fáil | Sheila Galvin (FF) wins the seat vacated by the death of her husband John Galvin (FF) |
| 19 February 1964 | Kildare | Fianna Fáil | Labour Party | Terence Boylan (FF) wins the seat vacated by the death of William Norton (Lab) |
| 8 July 1964 | Roscommon | Fine Gael | Fine Gael | Joan Burke (FG) holds the seat vacated by the death of her husband James Burke (FG) |
| 3 December 1964 | Galway East | Fine Gael | Clann na Talmhan | John Donnellan (FG) wins the seat vacated by the death of his father Michael Donnellan (CnaT) |
| 10 March 1965 | Cork Mid | Labour Party | Labour Party | Eileen Desmond (Lab) holds the seat vacated by the death of her husband Dan Desmond (Lab) |
Question:
what's the total number of dates listed for 1964?
Answer:
4