As a person
Born on the 3rd, 12th, 21st or 30th, or a 3 life path.
Funny, social, young-looking and lucky. Nearly everyone counts a 3 as a friend.
A great talker with a short attention span. Bends rules and dislikes structure, though it needs some.
Fails by going quiet and not talking to anyone.
Love: 5 is the best friend, with a romantic pull. 8 is very good. 4 is the enemy, and 7 a frenemy.
As a day
A 3 day, or the 3rd, 12th, 21st or 30th.
Good for parties, events, networking, media, talks, open houses and deals.
Avoid hiding away. Days that add up to 3 or 5 run flirtatious.
As a year
Network, talk, create and get seen. Do not be a hermit.
Lucky, unless your life path is 4. Your Chinese sign plays into it too.
Attention scatters. Pick what matters and finish it.
Friends and enemies
Friends: 5, the best, and 8, very good. 3 gets on with every number but 4 and 7.
Enemy: 4. With a 7 it is a frenemy pair.
Enemy numbers
Compounds
12: a 3 led by the 1.
21: a 3 led by the 2, with build energy from the 22 next door.
30: a 3 magnified by the 0.
12 and 21 flip into each other and add up to 33.