How do I know what my sign is?

If you go to astro.com, or astrotheme.com, and input your information(birthdate, time, and place) for your natal chart, you will get your sun sign. Along with a lot of other signs (different planets that govern different parts of your personality/character).

As far as I'm aware, this 13th sign business would only apply to people born starting last year (or whenever it was that it was announced).

Anyway, if you do happen to be an aries (birth time is the only way you will get a completely accurate chart, and particularly because you are right at the end of the sign/cusp), you may find that you have other planets in pisces that would account for your identifying with pisces so much.

Hope that helps!

Also, I find the 2 sites mentioned above to be more accurate, you can get your birth chart here as well
http://astro.cafeastrology.com/cgi-bin/astro/natal
This site has decent information on your placements, where the other sites are a little less new-to-astrology-friendly.

You can create a free natal chart here

http://www.astro.com/cgi/chart.cgi?btyp=w2at&rs=3

When you look at your natal chart, you will see symbols for the 12 astrological signs and symbols for the Sun, Moon, and Planets. Wherever you find your sun in your chart, this will be your "zodiac" sign.

Different thought systems on cusps. Depends who you talk to.
But if you identify with pisces (which is indeed your sign, now you know). Run with it!
I'm the 18th in 1980, and in different circumstances I can totally identify with aries 🙂
Not all the time though.

Haha, it was cool. Definitely glad I wasn't born much later. I do not envy the kids coming up now. What's your moon placement. See, I would say the times I do identify with aries is due to my aries moon.

Does it say Taurus for the sign though?
I would assume that's what you are in. Which is a more cohesive fit with your Pisces sun.

Taurus and Pisces are "sextile"

So... Same elements (trine) are more similar to each other - but a sextile is complementary.

Water (Pisces, Cancer, Scorpio), and Earth (Taurus, Virgo, Capricorn) are all sextile each other.
Fire (Aries, Leo, Sagittarius), and Air (Aquarius, Gemini, Libra) are all sextile each other.

A Taurus moon would "understand" your Pisces sun nature, but provide you with some earthy grounding components. Therefore, complimenting it, instead of working against it.

Nah, I wouldn't say so.... no more than any other day of the year.
All have their pros and cons.

Hrmmm.... some more generalized reading for you though:

http://www.elbertwade.com/page109.html (you are a 3rd decan Pisces)

Posted by pixelpwr
I was born on March 20th. I identify 100% as a pisces, but how do I know for sure that I am a pisces? And isn't there now a 13th astrological sign?

a 13 Asytological sign oO