2019 is the 150th anniversary of the Periodic Table of Chemical Elements
1869 is considered as the year of discovery of the Periodic System by Dmitri Mendeleev. 2019 will be the 150th anniversary of the Periodic Table of Chemical Elements and has therefore been proclaimed the "International Year of the Periodic Table of Chemical Elements (IYPT2019)" by the United Nations General Assembly and UNESCO.
Read more on web: https://www.iypt2019.org/
Mendeleev 150: 4th International Conference on the Periodic Table endorsed by IUPAC (link to web-site of Conference)
Sep 06-13, 2019, Saint Petersburg, Russia