Ethiopia has planted more than 200 million trees every day.
Prime Minister Abiy Ahmed leads the project to counteract the effects of deforestation and climate change in the drought-prone country.
Some public offices were closed to allow the participation of officials.
According to the United Nations, forest cover in Ethiopia declined from 35% of the total area in the early 20th century to just over 4% in the 2000s. [1
Ethiopia's Minister for Innovation and Technology Getahun Mekuria tweeted that more than 220 million trees were planted:
A total of four billion trees are to be planted.
Promotional videos were placed on state media and prompted the public to plant and maintain trees, our reporter said.
The current world record for planting trees in a single day is set by India, which in 2016 planted more than 50 million trees with 800,000 volunteers.
Abiy critics say he uses the campaign to distract the public from the challenges facing his government, including ethnic conflicts that drove some 2.5 million people out of their homes.