Birthdays · December
December 19 birthday: sun in Sagittarius, moon in Aries
December 19: your sun is Sagittarius 27°35′, the moon that day sat in Aries 25°07′ (waxing gibbous). Computed, with receipts.
By the diosa astrologers · Computed on Swiss Ephemeris · Updated 2026-08-27
Born on December 19? Here is what the sky actually did that day, computed on Swiss Ephemeris. These are shared facts for everyone with this birthday; your exact birth time and place make the rest of the chart yours.
Receipt · the sky on December 19, 12:00 UTC
Sun: Sagittarius 27°35′ · Moon: Aries 25°07′ · Phase: Waxing gibbous (73% lit)
Swiss Ephemeris via services/ephemeris (GET /chart) · generated 2026-08-28
Your sun: Sagittarius 27°35′
The sun sits at 27°35′ of Sagittarius on this date. That exact degree matters: two people born three days apart in Sagittarius have different sun degrees, and the degree is what decides which aspects your sun makes to the rest of your chart. The open road, meaning chased past the map's edge. The full portrait: the Sagittarius sign guide.
The moon that day: Aries 25°07′
At noon UTC the moon was in Aries. Everyone born on December 19 shares this lunar backdrop, but the moon moves roughly half a degree per hour, so if it was near a sign boundary that day, your birth time decides whether it had already moved on. Born within a day of a change? Get your exact chart cast rather than guessing: it takes about a minute. What a moon in Aries feels like: moon in Aries.
Born under a waxing gibbous
The moon was waxing gibbous on your birthday, about 73% illuminated at noon. Astrologers read the sun-moon phase as the rhythm between intention and instinct: new moons start things, full moons peak, waning phases release. It is a fixed fact of your date, it repeats on the 19-year Metonic cycle, and unlike most astrology claims you can verify it in any almanac.
Your birthday in the whole chart
Sun, moon, and phase are the headline, but the chart is the whole sky: Mercury, Venus, Mars, the rising sign, and the houses all depend on the exact minute and place. That part cannot be a static page, it has to be computed for you: cast your birth chart, free. The method: how to read your birth chart.
Other December days
FAQ
What is my zodiac sign if I was born on this day?
Your sun sign for this date is Sagittarius. The sun's entry and exit dates shift by a few hours across years, so cusp boundaries are close but not exact. diosa prints the sun's exact degree for your birth date, computed on Swiss Ephemeris.
Why does the moon sign on this page matter to me?
The moon was in Aries on this date at noon UTC, and everyone born that day shares that backdrop. Your personal moon sign depends on your exact birth time and place, because the moon moves half a degree per hour and can change sign within a day.
What moon phase was it on this day?
A waxing gibbous (1% illuminated at noon). The phase you were born under is a fixed fact of your birth date, and it repeats roughly on the 19-year Metonic cycle.
How is this different from other birthday astrology pages?
Every number here is computed, not copied: exact degrees to the arc-minute, the real moon position and phase, with the generation date printed on the page. Check it against any professional ephemeris software; it will match.