The popular programme, which has been running since 2011, and regularly draws audiences in excess of 4m, sees a team of home improvement experts led by Alan Titchmarsh transform properties for deserving families in difficult circumstances. Let's now explore this window further to determine just when was the optimum time.The egg once released use a lifespan of twelve (12)hours. The egg therefore, should be fertilized in this twelve- hour period for conception that occurs. The sperm conversely can survive around 5 days in the reproductive duct.