"When I announce formally, I will let everyone know that date in the future.
At some unknowable date in the future, remaining in the Senate will reach a point of diminishing returns for Obama.
You can agree to begin collecting the insurance at a much later date in the future, like your 85th birthday.
The ambition is still to buy about 138 F-35 Lightning fighter jets for the carriers, at an unidentified date in the future.
One method, he said, is based on New York Mercantile Exchange prices for gasoline futures -- bulk contracts to deliver fuel on a set date in the future.
The Chicago Merc is a futures market, where people trade contracts that give them the right to purchase a particular commodity at a specified date in the future.
The administration would let companies withdraw oil at any time as long as they return it and additional oil at a predetermined date in the future.
But the companies would be required to return not only all the oil they remove but some extra amount, at a fixed date in the future.
However, she is unlikely to pick a date in the future, as that could result in a big increase in migration as people try to beat the deadline.
The value of forwards and futures, another set of derivatives in which counterparties agree to transact at a date in the future, is about $24 trillion.
Pressure groups also say developing nations must join the new agreement at the start rather than at an unspecified date in the future.
