So there was a little wrinkle added to Greece’s debt repayment timeline Thursday.

Greece had been due to pony up around a repayment of around 300 million euros ($337 million) to the International Monetary Fund on Friday. But that’s not going to happen because Greece is invoking an IMF rule that allows it to bundle its monthly principal payments together and pay them at the end of the month. See: Greece to bundle its June IMF payments.

The maneuver, coming as Greece and its international creditors continue to hash out an end to their long-running debt standoff, didn’t do a lot for market sentiment on Wall Street, with U.S. stocks sinking to session lows after the news and ending the day with sizable losses.

We’ll see how the market handles it all on Friday. Will investors freak out as Greece effectively misses what had been a long-scheduled payment, regardless of it being allowed under IMF rules? Or will they merely view it as yet another can kicked down the road, setting the stage for heightened drama at the end of June.

In the meantime, here’s a look at how much Greece owes in the near term, courtesy of Athens-based Eurobank:

European officials have previously pointed to the end of June as the real crunch date. That is when the current bailout extension officially comes to an end. Also, as the chart shows, Greece faces nearly €5 billion in payments in July.

Indeed, July 20 looms large on the calendar. As this table from Brussels-based think tank Bruegel shows, a pair of bonds held by the European Central Bank worth around €3.49 billion mature on that day.