Bhagavad Gita, Chapter 8, Verse 17

They who know the true measure of day and night, know the day of Brahma, which ends in a thousand Yugas, and the night which also ends in a thousand Yugas.

The real scale being described here is meant to genuinely reframe how someone sees ordinary time.

This isn't meant as trivia, it's meant to shift perspective. Understanding just how vast these real cycles are is described as changing how someone actually relates to their own sense of time and urgency.