If, according to the nature of the contract or by a declaration of intention of the parties, the objective for which the contract has been entered is unattainable unless it is performed at a designated time and date or within a designated period, and one of parties has not effected performance on his or her part, the other party may, without giving the notice mentioned in the preceding Article, rescind the contract.
Civil Act — Article 545 (Periodic acts and rescission)
민법 제545조
For AI agents and developers — get this article as JSON, with the English and current Korean effective dates and an outdated-translation flag, from the korea-law API or as an MCP tool:
https://mcp.apify.com?tools=kr-data/korea-law