Occultation of 4UC 620-033947 by (356) Liguria on 2021-02-15 Green O+: Rui Goncalves Optics: M254 | Method: VID | Duration: 19.64 -8.39,39.52,0 Green O+: Filipe Dias Optics: M212 | Method: CCD | Duration: 21.49 -8.37,37.13,0