The International Year of the Periodic Table
2019 is the international year of the Periodic Table
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.
If you want to brush up on the table there are a couple mobile apps to help you.
You can follow events for the year on Twitter https://twitter.com/iypt2019