GreenDay is a plastic-free picnic concert that invites general public to experience a sustainable lifestyle. The stage and movie screening are powered by 100% renewable energy. The event includes an exhibition and a VR area that shows the threats of plastic pollution to marine life, and Make Something workshops of beeswax food wrap and lemon shampoo. Led by a group of Greenpeace volunteers, the events in two cities, Taipei and Taichung, attracts a turnout of 2,150 people. 

【GreenDay 綠・日子】是由綠色和平和志工共同創辦的活動，於臺北華山文創園區舉辦。以「環境守護，就是一種生活方式」，邀請民眾體驗簡單與永續的綠色生活。所有的音樂表演、電影播放都以100%綠能供電。超過1,000位支持者到現場參與，透過貨櫃展示、VR模擬實境影片、蜂蠟及檸檬洗頭水的手作體驗，以及音樂和電影的感染力，感受真正的「綠・日子」。