The setting of the time limit for submission of tenders and the time limit for requests to participate
1. The time limit for submitting tenders and requests to participate shall be established by the contracting authority in such a way as to ensure enough time for drawing up tenders or requests to participate, taking into account the degree of complexity of the contract and the minimum time limits specified herein.
2. Where tenders can be made only after a visit to the site or after on-the-spot inspection of certain documents, the time limit for the submission of tenders shall be longer than the minimum time limit set out in this Act and shall allow all economic operators concerned to obtain all the information needed to produce tenders.
3. The time limit for receipt may only be made longer and it shall be made in line with the provisions on the amendment of the contract notice, the invitation to tender and the invitation to participate [Article 55].
4. Contracting authorities shall extend the time limit for the receipt of tenders or requests to participate in the following cases:
- where any additional information, although requested by the economic operator in good time in accordance with Article 56, is not supplied within the time limit set [Article 56 (2)] or
- where changes are made to the procurement documents.
5. The length of the extension shall be proportionate to the importance of the additional information or change. Contrary to the provision set out in paragraph 4(b), contracting authorities shall not be required to extend the time limit, if the changes made to the procurement documents are not significant and the amendment is sent not later than ten days before the expiry of the time limit for the submission of tenders or requests to participate or, if a notice shall be published concerning the amendment, such notice is published not later than eleven days before the expiry of the time limit for the submission of tenders or requests to participate. The changes made to the procurement documents shall not be considered significant, if they do not affect the timely, proper preparation of requests to participate or tenders.
 This amendment entered into force on 24 December 2015.