Hardware Freedom Day

Hardware Freedom Day is an annual celebration organized by the Digital Freedom Foundation. The goal of Hardware Freedom Day is to celebrate the spirit of open hardware and make more people aware of using and contributing to free and hardware projects. The first Hardware Freedom Day was held on April 20, 2013. The 2017 date is April 15.
Schedule.
Anybody can organize a Hardware Freedom Day event and there is no rigid schedule followed. Digital Freedom Foundation co-ordinates the event at a global level, providing support, giveaways and a centralized collaboration space. However, volunteer teams around the world organize the events by themselves.
Some common activities of Hardware Freedom Day events are
Open hardware.
In the context of Hardware Freedom Day, the term "open hardware" encompasses physical devices whose design can be
shared in public without restriction and freely modified and re-distributed.
The design includes all information that a person would need to re-create the device.
2015-2016 issues.
The Digital Freedom Foundation servers were hacked over Christmas 2015 (posted on their mailing list) and have struggled to come back up. HFD 2016 is planned for April 9, 2016 but no registration is available which will make this year celebration hard to follow.