In the context of the Public Contracts Regulations 2015 (and the Public Contracts Regulations 2006 which they replaced), a mandatory period between the notification of the intended award of a contract subject to those regulations and the actual award of that contract. The standstill period ends at midnight at the end of the tenth day after sending the notice if the authority sends the notice by electronic means or by fax, or the 15th day after the notice is sent by other means, or the tenth day after the date on which the last supplier receives it, whichever occurs first. (Regulation 87, PCR 2015.)