Millions of Iranians across the country have begun ten days of celebrations, marking the 35th anniversary of the victory of the 1979 Islamic Revolution.
The ceremonies kicked off all over the nation on Saturday morning at 9:33 a.m. local time (0603 GMT), the time when the late founder of the Islamic Republic Imam Khomeini arrived back home on February 1, 1979 from exile.
Imam Khomeini spent more than 14 years in exile, mostly in the Iraqi holy city of Najaf. He also spent some time in Turkey and France, before his return to Iran.
The day when Imam Khomeini returned to Tehran marks the start of 10 days of celebrations better known as the 10-Day Dawn festivities, which culminate in nationwide rallies on February 11, the anniversary of the triumph of the Islamic Revolution.
Meanwhile, Leader of the Islamic Revolution Ayatollah Seyyed Ali Khamenei visited the mausoleum of the late Imam Khomeini, southern Tehran, to pay tribute to the founder of the Islamic Revolution on Saturday morning.
The Iranian nation toppled the US-backed Pahlavi regime 35 years ago, ending the 2,500 years of monarchic rule in the country.
The Islamic Revolution spearheaded by the late Imam Khomeini established a new political system based on Islamic values and democracy.
During the 10-Day Dawn festivities, Iranians take part in different events and activities to mark the victory of the Islamic Revolution.