RIGA, Latvia -- Greece sought to downplay the scale of its differences with its bailout creditors as the eurozone's top official said Friday that time is running out for the country to secure a deal that will prevent its bankruptcy.

Though Eurogroup president Jeroen Dijsselbloem signalled it would be hard to get a deal at the meeting of 19 eurozone finance ministers in the Latvian capital of Riga, he said he hoped to be able to report some progress later.

He said there's a "great sense of urgency" from all sides to get a deal done, particularly for Athens so the country can get the financial support it needs "to make sure there's enough money available to keep the government running."

Greece had an end-of-April date to agree to more reforms in exchange for rescue money its creditors had set aside. Without the money, Greece faces potential bankruptcy and a possible exit from the euro, a development that many in global policymaking circles feel could damage the world's economic recovery.

Though Dijsselbloem noted that "April isn't over yet," he said the deadline was far more important for Athens than the eurogroup.

Slovakia's finance minister, Peter Kazimir, showed little optimism that a deal would be agreed on in coming days and even ventured that Athens has until the end of June, when Greece's European bailout program expires.

For weeks, the meeting in Riga was expected to be the one where Greece's immediate financial future would be sorted out. Greece's left-wing government, elected in January on a mandate to bring crippling austerity to an end, would present its reform plans to its creditors in the eurozone. If all worked out as planned, Greece would be handed the remaining money available in its bailout program -- 7.2 billion euros ($7.7 billion) -- to pay off upcoming debts to its creditors in the eurozone and the International Monetary Fund.

Creditors have demanded reforms that include sweeping changes to pensions and labour rules. But the Greek government has ruled out many key demands, arguing it was elected to end the kind of stifling budget austerity that contributed to a 25 per cent contraction in the economy. Its focus is geared far more on fighting corruption and increasing its tax take than more cuts.

Despite weeks of tortuous discussions, Greek Finance Minister Yanis Varoufakis is not expected to present a final list of reforms at the meeting. The decision this week by the Greek government to scrape together spare cash from municipalities and state enterprises like hospitals and the national gallery, is likely to buy it some time. The move could, according to independent estimates, rake in 2 billion euros ($2.14 billion).

"Today the message is really 'let's speed up,"' said Pierre Moscovici, the European Union's top economy official.

Though Varoufakis did not speak to reporters as he entered the meeting, he insisted in a blog post published Friday that the "current disagreements are not unbridgeable" and that there already is common ground, particularly on revamping the tax system and making pensions fit for purpose by, for example, limiting early retirement.

"The Greek government wants a fiscal-consolidation path that makes sense, and we want reforms that all sides believe are important," Varoufakis wrote. "Our task is to convince our partners that our undertakings are strategic, rather than tactical, and that our logic is sound. Their task is to let go of an approach that has failed."

Heading into the meeting, Slovakia's Kazimir showed his frustration, saying he was "a little bit tired" by the failure of the Greek authorities to present a properly costed set of proposals.

"I have almost no expectation today," he said. "Substance is missing, this is the crucial problem. Time is running and we have no time for diplomatic or political chit-chat."

Kazimir wasn't alone expressing his frustration. "I am already quite annoyed with this issue," said Austria's Johann Schelling.

Many in the markets think a deal could emerge on May 11, when eurozone finance ministers are scheduled to meet next. The main stock market in Athens was up 3.5 per cent Friday, while the interest rates fell on an array of Greek bonds. Both are signs that investors are a little less nervous.

"While the prospects of possible Greek default haven't receded, it would appear that the timing has been delayed once again as both sides try and come to a deal that they can somehow sell as a solution that will satisfy everybody," said Michael Hewson, chief market analyst at CMC Markets.