When do ya think Severus' birthday could be?

This is what I have found on hp-lexicon.org

1960: Born 9 January: Severus Snape is born to witch Eileen (Prince) Snape and muggle Tobias Snape (HBP30). Young Severus grows up in what appears to have been an unhappy घर (OP26) in an industrial part of northern England.
साल calculated from साल of James Potter's birth; the महीना and दिन were दिया on Jo's website (JKR).

link

In several लेखाए including J.K.Rowlings herself Severus Snape was born on the 9th of January, 1960. That makes him a Capricorn, high earth element with air. This द्वारा his Zodiac explains his mastery on the art of Potions which are mainly herbal based and his ability to fly.

Just for fun I looked up his birthday प्रोफ़ाइल and this is what I got for the 9th of January:

Your personal ruling planets are Saturn and Mars.

आप are governed द्वारा the bold and energetic Mars, which brings to the fore your active, passionate and impulsive nature. आप could say that your real name is "Action Jackson"!

The upside is that आप do not like laziness of any sort, therefore work and physical activity suit आप down to the ground. आप are always working on new projects, and like to be the first and best at what आप do. आप usually succeed and do not give up without a fight. Saturn creates your tenacious and methodical nature.

Some frustration is usually evident with this combination. आप must learn to express any resentment या dissatisfaction with फ्रेंड्स या lovers, lest it affect your health detrimentally over a long term period. आप do have strong sexual and passionate energy and when आप meet the right person in your life आप will give your all to them.

Your strength of mind is very notable even under the most trying of circumstances. Learn to enjoy play as much as work

Born Jan 9, 1960. Which makes him a "Pig" as per Chinese astrology. Curiously enough, I've read somewhere that Pigs should be careful of Snakes... A warning Severus should have definitively heeded.

January 9th 1960