The minimum period laid down in Article R. 2161-14 may be reduced:
1° To ten days if the contracting authority has published a prior information notice that has not been used as a call for tenders and where this notice meets the following conditions:
a) It was sent for publication at least thirty-five days and at most twelve months before the date on which the contract notice was sent;
b) It contains the same information as that set out in the contract notice, provided that this information was available at the time it was sent for publication;
2° Twenty-five days if tenders are or may be submitted by electronic means;
3° Ten days when a duly justified emergency makes it impossible to comply with the minimum time limit.