Update Community-Events.md (graphql#483)

Author: nikolasburk

site/community/Community-Events.md

@@ -8,13 +8,21 @@ sublinks: Upcoming Events,Meetups
 
 ## Upcoming Events
 
-### GraphQL-Europe Conference
+### GraphQL Day
+
+- **Date:** April 14, 2018
+- **Location:** Amsterdam, The Netherlands
+- **Link:** https://www.graphqlday.org/
+
+GraphQL Day is a hands-on developer conference (including an extensive practical workshop) for lovers of GraphQL. GraphQL Day is part of the [GraphQL Europe](https://graphql-europe.org) family.
+
+### GraphQL Europe Conference
 
 - **Date:** June 15, 2018
 - **Location:** Berlin, Germany
 - **Link:** https://graphql-europe.org
 
-GraphQL-Europe is a non-profit GraphQL conference in Europe with speakers from all around the world. Learn about GraphQL best practices from industry experts and become part of the thriving GraphQL community.
+GraphQL Europe is a non-profit GraphQL conference in Europe with speakers from all around the world. Learn about GraphQL best practices from industry experts and become part of the thriving GraphQL community. **The [CfP](https://www.papercall.io/graphql-eu) is open until March 31**.
 
 ## Meetups