What is ‘a’ or ‘the’ Bar Date please?

Answer: The Bar Date is the date1 by which any person, corporation or governmental unit with a claim against a bankrupt debtor must file a "Proof of Claim.” This date is established by the United States Bankruptcy Court. A "claim" is: (a) a right to payment, whether or not such right is reduced to judgment, liquidated, un-liquidated, fixed, contingent, matured, un-matured, disputed, undisputed, legal, equitable, secured, or unsecured; or (b) a right to an equitable remedy for breach of performance if such breach gives rise to a right to payment, whether or not such right to an equitable remedy is reduced to judgment, fixed, contingent, matured, un-matured, disputed, undisputed, secured or unsecured.