| Date | Person | Description |
|---|---|---|
| Koc, Jan | Narwojsz conducted astronomical observations together with Bystrzycki and Koc | |
| Koc, Jan | Koc conducted astronomical observations together with Gawroński and Bystrzycki | |
| Narwojsz, Franciszek | Narwojsz studied philosophy under Dobszewicz in Vilnius |