0214 GMT September 19, 2019
The agreement was signed in the presence of regional and international dignitaries including Ethiopian Prime Minister Abiy Ahmed and South Sudanese President Salva Kiir, Reuters reported.
"Today, the country begins its historic transition to democracy," read the front page of the Tayar newspaper, a headline echoed by most other dailies.
The deal reached on August 4 – the Constitutional Declaration – brought an end to nearly eight months of upheaval that saw masses mobilize against Omar al-Bashir, who was ousted in April after 30 years in power as president.
The agreement brokered by the African Union and Ethiopia was welcomed with relief by both sides – protesters celebrated what they see as the victory of their "revolution", while the generals took credit for averting civil war, according to AFP.
Hundreds of people boarded a train from the town of Atbara – the birthplace of the protests back in December – on Friday night, dancing and singing on their way to the celebrations in Khartoum, videos shared on social media showed.
"Civilian rule, civilian rule," they chanted, promising to avenge the estimated 250 allegedly killed by security forces during the protests.
After Saturday's signing, Sudan kicks off a process that includes important first steps.
The composition of the civilian-majority transition ruling council is to be announced on Sunday.
On Thursday, former senior UN official Abdalla Hamdok, a veteran economist, was designated as transitional prime minister.
He is expected to focus on attempting to stabilize Sudan's economy, which went into a tailspin when the oil-rich south seceded in 2011 and was the trigger that sparked the initial protests.
At Khartoum's central market early Saturday, shoppers and stallholders interviewed by AFP all said they hoped a civilian government would help them put food on the table.
"Everybody is happy now," said Ali Yusef, a 19-year-old university student who works in the market to get by.
"We were under the control of the military for 30 years but today we are leaving this behind us and moving towards civilian rule," he said, sitting next to tomatoes piled directly on the ground.
"All these vegetables around are very expensive but now I'm sure they will become cheaper."
While it remains to be seen what changes the transition can bring to people's daily lives, residents old and young were eager to exercise a newfound freedom of expression.
The country of 40 million people will be ruled by an 11-member sovereign council and a government, which will – the deal makes clear – be dominated by civilians.
However, the Interior and Defense Ministers are to be chosen by military members of the council.
Observers have warned that the transitional government will have little leverage to counter any attempt by the military to roll back the uprising's achievements and seize back power.
One of the most immediate diplomatic consequences of the compromise reached this month could be the lifting of a suspension slapped on Sudan by the African Union in June.
Bashir, who took power in a 1989 coup and is wanted by the International Criminal Court on charges of genocide in the Darfur region, had been slated to appear in court Saturday on corruption charges.
But his trial has been postponed to an as yet undetermined date.