" In 1591 the new Pope Gregory XIV reversed the decision, declaring abortion to only be homicide if it took place after ensoulment, which he determined took place 166 days into a pregnancy, or well over halfway through the second trimester. This decision lasted for 278 years until Pope Pius IX reversed the decision yet again in 1869 and made abortion after conception a sin that automatically excommunicated those involved in its procurement from the Catholic Church."