Ukraine peace largely intact apart from key railway hub
Heavy fog shrouding sodden fields muffled the sound of artillery, but regular shelling could still be heard from Luhansk, a town about 15km to the northwest.
The ceasefire has kindled slender hopes of reprieve from the conflict between government troops and Russian-backed separatists that has claimed more than 5,300 lives since it began in April.
Attention will be focused in the coming days on Debaltseve, where Ukrainian forces have for weeks been fending off severe onslaughts from the rebels.
The town is a railway link between the main separatist-held cities of Donetsk and Luhansk.
This latest cessation of hostilities was agreed after a marathon session of diplomacy last week that brought together the leaders of Ukraine, Russia, Germany and France for talks in the capital of Belarus, Minsk.
Under the deal, the progress of the ceasefire is to be monitored by Organisation for Security and Co-operation in Europe observers.