What is the most sound opinion regarding the Eid sermons: Is it one sermon or two? And what is the evidence for that?

The majority of jurists from the four madhhabs and others hold that the Eid sermon consists of two sermons separated by a sitting, analogous to the Friday sermon. They base this on weak hadiths and authentic narrations from some of the Tabi'in. Some scholars, however, maintain that it is a single sermon, based on the fact that the authentic hadiths transmitted from the Prophet (peace be upon him) only mention one sermon. Still others are of the view that the Sunnah (definition) is one sermon, but there is no harm if it is made two, and it is recommended to dedicate a special admonition to women. In conclusion, the issue is subject to ijtihad (definition), and there is wide latitude in the matter, as there is no explicit and definitive text in the Prophetic Sunnah, even though its apparent meaning indicates a single sermon.