League One and Two teams will play nine fewer games than normal this season
Scottish League One and Two clubs will both start a 27-game season in October.
Teams will play each other three times, with the campaign starting on 17 October in a structure that mirrors that of the Championship.
League One's start date was confirmed on Thursday, with that of League Two ratified on Friday.
"Although the pandemic continues to cause challenges, there is now light at the end of the tunnel for teams," said SPFL chief executive Neil Doncaster.
"We will, of course, continue to monitor the spread of the virus to make sure that any return to matches is safe for everyone involved and it is vital that we all continue to adhere to the strict protocols which have been put in place.
"We will continue to consult with Scottish government and the other stakeholders about when we might expect crowds to return and what Scottish football can do to help progress to this ultimate goal."
Work will now begin on compiling a fixture list, with teams meeting home and away and the SPFL using "reasonable endeavours" to ensure no more than five of any club's other nine fixtures are away.
