The numeric sequence unambiguously represents September 14, 2024 , in the international YYYYMMDD format common in East Asian digital contexts (and particularly prevalent in Korean entertainment industry metadata).

The "TTYL" showcase itself occurred on September 2, 2024, so by September 14, the group was well into their full promotional run, appearing in colorful, synth-heavy outfits and delivering the "cheeky, sour-sweet, play-hard-to-get mood" they had described.