On Saturday, millions of people around the world will turn off their lights for one hour to show their commitment to protecting nature.
Other global landmarks that flicked the switch included Eiffel Tower in Paris, New York's Empire State Building, Dubai's Burj Khalifa, the Acropolis in Athens and the Kremlin building in Moscow.
This year's event comes after hundreds of thousands of young people around the world skipped school earlier this month to stage climate change protests, in an attempt at pressuring lawmakers to combat global warming.
All around the globe, families, individuals, and big corporations are participating in Earth Hour - an initiative to switch off the lights for an hour at 20:30 local time. Central Railway chief spokesperson Sunil Udasi said, "We observe Earth Hour every year".
Malacañang called on the public to lessen the use of plastics with the observance of Earth Hour 2019 on Saturday night.
"We are the first generation to know we are destroying the world. And we could be the last that can do anything about it", the charity said.
"To do this, we all need to switch on our efforts towards a more sustainable future".
Masango will be officiating the event on behalf of MMC for environment and infrastructure services Nico de Jager and he will be joined by MMC for community development Nonhlanhla Sifumba and director air quality and climate change Lebo Molefe.
In addition to switching off the electric lights to mark the Earth Hour, there are several fun activities that can be organised to spend the hour.