Zero-hour rule: A provision in the insolvency law of some countries whereby a bankruptcy or similar procedure declared by a court during the day is considered to have been declared at 0.00 a.m. of the same day. This generally has the effect of retroactively rendering ineffective all transactions of the closed institution that have taken place after 0.00 a.m. on that date.

Zero coupon bonds
Zero-hour rule in our glossary: terms and definitions

.  Be sure to use our resources to the full!  Just follow the link below:

Zero-hour rule at assetman.net