'The meeting between Putin and Trump in Argentina on the sidelines of the G20 summit is scheduled for 5.30 p.m. Moscow time [14.30 GMT] on 1 December', the source said.
According to the source, slightly more than two hours have been allotted for the meeting.
Meanwhile, another source in one of the delegations told Sputnik that the meeting will be shorter than planned.
'[The presidents'] talks envisage a one-on-one meeting, with 20 minutes allotted to it. It is planned to continue the talks with the participation of delegations', the source noted.
The conversation could be a continuation of their dialogue in Helsinki and could touch upon efforts to ensure stability and disarmament.
Earlier Trump stated that he might cancel his meeting with Putin during the G20 summit in Argentina following the Russia-Ukraine naval incident in the Kerch Strait.