1 Saint-Laurent, located on the Maroni river, which forms the natural border between Surinam and French Guyana.  Saint-Georges, on the Oyapock river, which is the natural border between Brazil and French Guyana.
Non-local personal and business checks. If the check is from a bank in a different federal reserve district than the depositing bank, it can be held for 5 business days under normal circumstances. Exceptions for new customers during the first 30 days. Banks are not required to give next day ability on the first $100 of deposits, and both local and non-local personal and business checks can be held for a maximum of 11 business days. For items typically available on the next day, the first $5000 must be released on the next business day, but any amount over $5000 can be held for 9 business days.
There is also an option to notate how long a check will be valid for. Some checks will have a statement that reads that it is only valid if presented within 90 days. This would be shorter than the standard time frame, but most banks would honor the written statement and refuse to pay the check if presented.