Euro states; it was not a currency in its own right. They could not be set earlier, because the ECU depended on the closing exchange rate of the non-euro currencies (principally the pound sterling) that day. The procedure used to fix the conversion rate between the Greek drachma and the euro was different, since the euro by then was already two years old. While the conversion rates for the initial eleven currencies were determined only hours before the euro was introduced, the conversion rate for the Greek drachma was fixed several months beforehand. The currency was introduced in non-physical form (traveller's
Poland and the euro stated that Poland will not join the Euro until at least 2020. Euro adoption will require the approval of at least two thirds of the Sejm to make a constitutional amendment changing the official currency from the złoty to the euro. The ruling Law and Justice Party opposes euro adoption. Former PM Donald Tusk has said that he may agree to a referendum on euro participation in order to gain their support for a constitutional amendment. Public opinion is against participation according to polls, with more than 70 percent believing that adoption of the euro would be bad for the