Visualization
March 31 – IEEE VAST/InfoVis/SciVis
April (odd numbered years) – TopoInVis
Late September – IEEE Pacific Visualization
Early December – EG EuroVis
Rolling – IEEE Transactions on Visualization and Computer Graphics (TVCG)
IEEE Vis paper list since 1990 and acceptance rates
late April – IEEE WORKING CONFERENCE ON SOFTWARE VISUALIZATION (VISSOFT 2019)
Graphics/AR/VR
January – SIGRRAPH
February – Computer Graphics International
Virtual Reality Software and Technology (VRST)
Geometry
March – Shape Modeling International (SMI)
July – ACM-SIAM Symposium on Discrete Algorithms (SODA)
August – Symposium on Simplicity in Algorithms (SOSA)
December – Symposium on Computational Geometry (SoCG)
Computer Aided Design
January – CAD Conference and Exhibition
Rolling – Computer Aided Design and Applications
To check for the legitimacy of journals, see cabells blacklist (available through library).