Greek state TV and radio were gradually taken off the air late on Tuesday, hours after the government said it would temporarily suspend all state-run broadcasts
The ERT broadcast blackouts began in several parts of the country around 11 pm local time (2000 GMT), about an hour before the government said all signals would go dead, although satellite broadcasts continued.
Around 2,500 workers will lose their jobs as part of a cost-cutting drive aimed at helping the country tackle its recession.
Thousands of media workers and supporters protested the closure outside the company's headquarters in the Athens suburb of Aghia Paraskevi.
More top news
Despite temperatures reaching double figures in the south today, it was still a chilly day, with brisk winds.
President Xi Jingping, who leads the worlds biggest polluter, has emerged as an unlikely figurehead for the battle against climate change.
Frankie Hill said he wanted to help rough sleepers because he felt sad that they are homeless on Christmas Day and "have to live alone".