Story
What changed and why it matters
The sign comes before the Moon
The useful detail in the Bahloo dust account is not only that the Moon rises. It is that observers noticed a faint haze before the Moon appeared and made that small prelude part of the teaching. The horizon itself became a timing instrument.
Story makes observation memorable
A purely technical note might say that light, moisture, dust or low haze can announce the bright Moon before the disk clears the horizon. The cultural phrasing gives the observation a person and a memory hook: Bahloo is coming, and the haze is his dust.
A calculation built from repeated seeing
CalculationTime should treat this as observational knowledge, not as a myth pasted on top of astronomy. The prediction works because generations compared a visible sign with what followed, then kept the relationship alive through language.