| Flag | City | Country | School | Latitude (°) +N/-S | Longitude (°) +N/-S |
 | Athens | Greece | Experimental College Agion Anargyron | 38.028 | 23.726 |
| Date | Gnomon height [cm] | Shadow length [cm] | Angle (°) |
| 12/10/2021 | 15 | 14.9 | 44.8 |
| Flag | City | Country | School | Latitude (°) +N/-S | Longitude (°) +N/-S |
| Athens | Greece | Experimental College Agion Anargyron | 38.028 | 23.726 |
| Date | Gnomon height [cm] | Shadow length [cm] | Angle (°) |
| 12/10/2021 | 15 | 14.9 | 44.8 |
