August 21 zodiac sign
Leo’s penultimate degree falls on August 21, with the Sun near 28° in the Mars decan: a lion tested many times over and starting to sense Virgo’s care for precision.
Sun signLeo
- Sun at 26°–30° Leo
- 3rd decan · Mars
August 21 in profile
At 28° Leo is near the end of its season, and these late degrees concentrate the sign’s experience. Mars, sub-ruler of the Aries third decan, adds energy and directness. An August 21 Leo has both the pride of fixed fire and the readiness to act that Mars brings, and the closeness of Virgo shows as a growing respect for craft. They want their work to be admired, and they now know admiration has to be earned in the detail.
Stress brings out the commander. When the plan falls apart they take charge, assign tasks and keep morale up with a joke, while quietly losing sleep. They are poor at admitting they are overloaded, since that feels like a crack in the armour. Friends learn to read the signs: shorter messages, harder workouts, a sudden urge to clean everything. Once the danger passes, they need a proper day off.
Work style is energetic and hands-on. They lead from the front, prefer projects with a clear deadline and enjoy being the one who solves the impossible problem on the last day. Mars makes them quick; the late degree makes them thorough when it counts. The useful habit is delegating early rather than at the breaking point, which keeps both the result and their temper intact.
Leo all day
In every year from 1930 to 2040 the Sun was in Leo for the whole of August 21, in every time zone. This is not a cusp birthday: the nearest changes of sign fall around July 23 and August 22.
Your Moon sign depends on the year
The Sun is in the same place on August 21 every year; the Moon is not. It changes sign every two and a half days, so people who share this birthday can have any of the twelve Moon signs. Here is where it was on August 21 in recent years, from 00:00 to 23:59 UTC (an arrow means it changed sign during the day).
- 2017Leo → Virgo
- 2018Sagittarius → Capricorn
- 2019Aries → Taurus
- 2020Virgo → Libra
- 2021Aquarius
- 2022Gemini
- 2023Libra → Scorpio
- 2024Pisces → Aries
- 2025Leo
- 2026Sagittarius
Compatible signs for a Leo
Sun-sign compatibility starts from the element. Leo gets on most easily with its own element and with the two sextile signs, and feels the strongest pull from its opposite. For an August 21 birthday, in the Aries decan, Aries is a natural match. The full charts decide how a real pairing feels.
A gift for an August 21 birthday
A high-quality tool kit or a beautifully made leather work bag, practical enough for a late Leo and handsome enough to be shown off.
Asked about August 21
What zodiac sign is August 21?
August 21 is Leo in every year: the Sun is at about 26°–30° Leo that day, in the sign’s 3rd decan.
Is August 21 a cusp birthday?
No. The Sun is well inside Leo on August 21. The cusp days, when the Sun changes sign, fall around July 23 and August 22. Astrology has no blended cusp signs anyway: at any moment the Sun is in one sign.
What decan is August 21?
August 21 falls in the 3rd decan of Leo. In the triplicity system we use, that decan belongs to Aries and its ruler Mars, which colours the Leo Sun with a little of Aries.
Your birthday is only the Sun
An August 21 birthday tells you where the Sun was. The Moon, the Rising sign and eight more planets each sit somewhere of their own, and they depend on the year, the hour and the place. The free calculator shows all of them.