Foaling chart re-produced from The Amateur Horse Breeder by A.C. Leighton Hardman, 1970. In over 30 years of horse breeding this has been the most accurate foaling date estimation chart found. Used frequently, the accuracy is amazing.
This foaling chart has been re-produced from The Amateur Horse Breeder by A.C. Leighton Hardman, 1970. One of the most accurate mare gestation and foaling date estimation charts. This mare gestation chart has been used frequently and is amazingly accurate.
| Date of Service | Probable Date of Birth | Date of Service | Probable Date of Birth |
| January 1 | December 7 December 12 December 17 December 22 December 27 January 1 January 6 January 11 January 16 January 21 | July 5 July 10 July 15 July 20 July 25 July 30 August 4 August 9 August 14 August 19 | June 10 June 15 June 20 June 25 June 30 July 5 July 10 July 15 July 20 July 25 |
| February 20 February 25 March 2 March 7 March 12 March 17 March 22 March 27 April 1 April 6 | January 26 January 31 February 5 February 10 February 15 February 20 February 25 March 2 March 7 March 12 | August 24 August 29 September 3 September 8 September 13 September 18 September 23 September 28 October 3 October 8 | July 30 August 4 August 9 August 14 August 19 August 24 August 29 September 3 September 8 September 13 |
| April 11 April 16 April 21 April 26 May 6 May 11 May 16 May 21 May 26 May 31 | March 17 March 22 March 27 April 1 April 6 April 11 April 16 April 21 April 26 May 6 | October 13 October 18 October 23 October 28 November 2 November 7 November 12 November 17 November 22 November 27 | September 18 September 23 September 28 October 3 October 8 October 13 October 18 October 23 October 28 November 2 |
| June 5 June 9 June 14 June 19 June 24 June 29 | May 11 May 16 May 21 May 26 May 31 June 1 | December 2 December 7 December 12 December 17 December 22 December 27 January 1 | November 7 November 12 November 17 November 22 November 27 December 2 December 7 |