Last Frost Date
According to our Turf Care Calendar for Cool-Season Lawns in Kentucky, " Late-summer/early autumn is the ideal time for planting seed, seed germination and grass seedling development. Although spring lawn seedings can be successful, irrigation and extra care are likely necessary for juvenile grass plants to survive the summer."
It shows mid-August through mid-October as the best time, and mid-February through mid-April as the second best. Here is a link to that publication, https://franklin.ca.uky.edu/files/agr-55_-_turf_care_calendar_for_cool-season_lawns_in_ky.pdf
Please do not hesitate to call us at the Fayette County Extension Office, (859) 257-5582, for any further questions. Thanks!!