Frequency is measured in hertz (Hz). A person who has hearing within the normal range can hear sounds that have frequencies between 20 and 20,000 Hz. The most important sounds we hear every day are in the 250 to 6,000 Hz range.
An issue date was added, and cheques may not be valid a certain amount of time after issue. In the US and Canada a cheque is typically valid for six months after the date of issue, after which it is a stale-dated cheque, but this depends on where the cheque is drawn; in Australia this is typically fifteen months.
When I got home today, I looked up the actual law on stale checks. It turns out that a bank can pay or return an old check as it sees fit. According to the United States Uniform Commerical Code, a bank is not obliged to pay a check more than six months old. work at a bank, and youâre 100% correctâ¦banks do not have to accept checks more than 6 months old and usually donât. However, there is always wording in bankâs disclosures that say theyâre not liable if they do accept them (i.e. if a teller doesnât notice the date and deposits it).