| Flag | City | Country | School | Latitude (°) +N/-S | Longitude (°) +N/-S |
 | Chivilcoy | Argentina | Parque Cielos del Sur | -34.911 | -60.014 |
| Date | Gnomon height [cm] | Shadow length [cm] | Angle (°) |
| 13/12/2021 | 12.0 | -2.5 | -11.8 |
| 17/12/2021 | 12.2 | -2.5 | -11.6 |
| 19/12/2021 | 11.8 | -2.4 | -11.5 |
| 21/12/2021 | 11.8 | -2.4 | -11.5 |
