>>> In what month and year did the Texas Longhorn's accept an invitation to the SEC? 

- elapsed 2.180 seconds -

Based on the information provided, the Texas Longhorns accepted an invitation to join the SEC in the month of February in the year 2023. This is because the Big 12 announced in February 2023 that Texas and Oklahoma had negotiated a combined $100 million early termination fee to leave for the SEC a year before their media rights deal with the Big 12 was set to expire. The Longhorns football team will continue competing in the Big 12 through the 2023 season before moving to the SEC in 2024. Therefore, the month and year they accepted the invitation to the SEC was February 2023.