D.C. Mun. Regs. tit. 27, § 1528
1528.1 The contracting officer may postpone a bid opening until after the time scheduled for bid opening under the following circumstances:
1528.2 At the time of a determination to postpone a bid opening, an announcement of the determination shall be publicly posted. If practical, before issuance of a formal amendment of the IFB, the determination shall be otherwise communicated to prospective bidders who are likely to attend the scheduled bid opening.
1528.3 When a bid opening is postponed, the time of actual bid opening shall be the time established for determining "late bids" or other late actions under §1523.
1528.4 The contracting officer shall prepare a written memorandum for the file explaining the circumstances of the postponement.
1528.5 The contracting officer may proceed with the bid opening as soon as practical after the original scheduled time without prior amendment to the IFB or notice to bidders, whenever any delay incident to the issuance of the amendment or notice would not be in the best interests of the District.
SOURCE: Final Rulemaking published at 35 DCR 1431 (February 26, 1988).