Jennie hasn't shared a birth time, and no time with a known source exists. The date and place are on record: 16 January 1996, in Bundang, Seongnam, in South Korea's Gyeonggi Province. From those, the chart has a Capricorn Sun and a Scorpio or Sagittarius Moon, because the Moon changed sign late that evening. The Sun also sits exactly on Neptune.
The only birth time attached to Jennie online is 4:45 AM, and it comes from a YouTube Short that has since been deleted. That same video gave a time for Lisa too, and it never said where either one came from. Astrotheme carries the 4:45 AM figure with a C rating. It's easy to see why fans held on to it, but without a source there's nothing to check it against, so this chart works from the date alone. The birthplace is on firmer ground: Jennie named Bundang in the third episode of Apartment 404, where earlier reports had said Cheongdam-dong in Seoul.
The Sun in Capricorn sits on Neptune, within about half a degree all day. Capricorn brings patience, polish and a long view, the sign that builds things to last. Neptune adds imagination, glamour and an artist's eye, so the ambition comes wrapped in something dreamy and hard to pin down. Jupiter is in Capricorn too, at 2°, widening that steady drive.
Three planets gather in Aquarius: Mercury, Mars and Uranus, with Mercury moving retrograde right beside Uranus. That's an inventive, independent streak, happiest doing things differently from everyone else. Venus had just entered Pisces, where it's especially soft, romantic and generous, and it makes an easy sextile to Jupiter. Saturn sits in Pisces as well, giving that softness a steady, devoted backbone.
For most of the day the Moon was in Scorpio, which gives deep, loyal feelings and sharp instincts about people. Only a birth after about 10:25 PM would put it in Sagittarius instead, a more open and adventurous Moon.
Knowing the hour would reveal two more layers of the chart: the rising sign and the twelve houses. The rising sign turns over roughly every two hours, which is why the minute matters so much. Read purely as a what-if, the 4:45 AM time would put the rising sign in Sagittarius, at about 11°, with the Moon still in Scorpio. A birth later that morning or in the evening would tell a very different story, so for now the houses stay blank.