Undersky

The sky on Thursday, September 17, 2026

Sun inVirgo
Moon inSagittarius
Moon phaseFirst Quarter
Illumination37%
Exact aspectsSun sextile Mars
Mercury retrogradeNo

Sun and Mars stand about sixty degrees apart today, a sextile, traditionally read as an easy, cooperative angle. The Moon is in Sagittarius, near its first quarter, climbing toward full.

What does the Sun or Moon in Sagittarius mean?

Sagittarius is a mutable fire sign ruled by Jupiter, and it reads as the appetite for a bigger picture than the one currently in front of you.

The Sun spends about a month here, roughly late November into the December solstice. A Sagittarius Moon lasts about two and a half days and tends to read as optimism, bluntness and an itch to be somewhere other than here.

Mutable means it keeps moving, and fire means it moves on belief. This is the sign of travel, teaching and strong opinions loudly held, which is excellent for morale and occasionally rough on the person receiving the honest feedback. How much bluntness the moment can carry is a call you make.

Tropical Sagittarius runs up to the December solstice, where Capricorn begins, so it is the last stretch of the autumn quarter in the northern hemisphere.