The Enforcement Rules of the Conclusion of Treaties Act Article 8

After a treaty becomes effective, the competent authorities shall send the treaty to the Executive Yuan, which shall submit them to the President for promulgation, and submit the treaty’s effective date pursuant to Article 8 and Article 11, Paragraph 1 of the Act.
中文原文 條約締結法施行細則第8條
主辦機關依本法第八條及第十一條第一項規定,將條約案於生效後報請行政院轉呈總統公布時,應同時提報條約生效日期。

English translation for reference only; the Chinese text prevails. Not legal advice.