Surah Sad 38:81

إِلَىٰ يَوْمِ ٱلْوَقْتِ ٱلْمَعْلُومِ

Until the Day of the time well-known."

Translation: Saheeh International

Tafsir

until the day of the known time’ the time of the First Blast.

Excerpt from Tafsir al-Jalalayn, commentary on 38:81, via Quran.com. The reader has the full commentary and 9 more tafsirs.