"Permit the institution to provide up to 24 official visits in a rolling two‐year period" means a max 24 visits in any consecutive 24 month period. The 24 month period moves (rolls) as the calendar turns. I was curious and did some quick research to see where we stand with the official visit count. Based on what I could find (the dates may be off a day or two here/there), the list below looks like our last 24 official visits (note: Mark Smith never took an OV).
If it's accurate, we're tapped out on OVs until August 19, when we can have 1 OV until September 9. Then we can have 4 more OV and so on. Net result, we can have 7 OVs (through 5/31/19) for 2019 recruiting.
1. Trent Frazier (8/19/16)
2. Damonte Williams (9/9/16)
3. Jeremiah Tillmon (9/9/16)
4. Javon Pickett (9/9/16)
5. Kris Wilkes (9/9/16)
6. Abu Kigbab (9/16/16)
7. Mayan Kiir (10/7/16)
8. Greg Eboigbodin (5/31/17)
9. Matic Vessel (6/11/17)
10. Colin Castleson (9/1/17)
11.Landers Nolley (9/1/17)
12. George Conditt (9/15/17)
13. Amadou Sou (9/29/17)
14. Lukas Kisunas (10/7/17)
15. Elias Valtonen (10/10/17)
16. Ayo Dosunmu (10/10/17)
17. Talen Horton-Tucker (10/20/17)
18. Flo Thamba (12/14/17)
19. Samba Kane (3/9/18)
20. Tevian Jones (3/9/18)
21. Giorgi Bezhanishvili (3/25/18)
22. Alan Griffin (4/7/18)
23. Andres Feliz (4/8/18)
24. Bryce Golden (4/19/18)