Ukraine held back to see whether a Russian-backed truce would hold through the day before beginning its own withdrawal of forces from the frontline stretching across the war-torn country's separatist east.
The military reported suffering no casualties but more than a dozen overnight attacks by pro-Russian insurgents who refuse to accept the new Kiev leaders' decision to seek a closer alliance with the West.
Their unilateral claim of independence sparked five months of bloodshed that has killed 3,200 people and threatened the very survival of the ex-Soviet state.
But biting Western sanctions on Russia and the drain of ceaseless warfare on Ukraine's economy and morale brought the sides together for negotiations in early September that have since produced a broad truce and political settlement plan.
At its heart lies an agreement to establish a buffer zone 30 kilometres (18 miles) wide between rebel and government forces across the economically vital but shattered rustbelt nestled near Ukraine's Russian frontier.
The guerrillas would then be granted temporary control of land from which they repelled Ukraine's outdated armed forces with Russia's alleged help.
The ceasefire was meant to take effect last weekend as a prerequisite of any global deal. Yet low-scale clashes continued and the mooted pullback was not enforced.
A ray of hope glimmered Friday when top Russian and Ukrainian commanders met for the first time near the rebel stronghold Donetsk to pore over maps and set terms under which both sides could trust each other enough to order a retreat.
Russia's state media -- long viewed as the mouthpiece of the Kremlin -- portrayed the meeting as Kiev's first recognition of an actual international border being established across the industrialised Lugansk and Donetsk provinces.
Ukraine in turn stressed that the Russians promised to impress on the militias the need to respect the truce -- a rare recognition by Moscow of its sway over the separatists.
"We are going to convince (the rebels) -- use reason with them. That is the most important thing," Russia's ground forces deputy commander Aleksander Lentsov told Ukrainian television after the meeting.
The Ukrainian defence ministry said at least 24 hours of uninterrupted calm across the war zone could prompt the launch of a gradual withdrawal from the front on Sunday night.
But the self-proclaimed heads of Lugansk and Donetsk have remained conspicuously silent. The insurgency's political leaders were unable to force warlords to respect a ceasefire that Kiev revoked after just 10 days in June.
- Diplomatic warfare -
The prospects of calm returning to Ukrainian battlefields have been dimmed by Russia's refusal to soften its Cold War-style diplomatic standoff with the West over the geopolitical future of former Soviet holdings.
"Attempts to put pressure on Russia, to force it to renounce its values, the truth and justice are completely futile," Russian Foreign Minister Sergei Lavrov told a UN General Assembly meeting in New York on Saturday.
Lavrov accused his European and US counterparts in the audience of legalising a criminal regime in Kiev that was waging war on ethnic Russians after staging the violent overthrow of a Kremlin-backed leadership.
"The United States and the European Union supported a state coup in Ukraine, deciding to blindly justify any actions taken by the self-proclaimed authorities in Kiev," Lavrov said in prepared remarks.
Ukraine's worst crisis since its 1991 independence began with the ouster under the pressure of deadly street protests in February of an unpopular president who rejected a historic EU agreement in favour of a closer alliance Moscow.
The Kremlin's subsequent annexation of Crimea and demands for decentralisation of power from Kiev helped encourage bands of militias to overthrow local governments across the east and invite Russian forces into the region.