Most everyone knows their sun sign, you know the old "what's your sign?" and you reply "I am an Aquarius" or what ever your sign is.  I am an Aquarius and currently the sun is in Leo, and that is the direct opposite of my sign in the zodiac.  

When the sun is in the sign that is exactly opposite of yours you will notice that you seem to need more rest, you are lacking energy and just are more tired - and all for no apparent reason.  

That means it is good to learn the sign opposite of yours, mark the dates down and plan accordingly.  There is no need for drastic changes, just knowing when you will need to spend more time honoring your body and it's natural cycle of a bit more rest being needed.  And don't plan activities that will wear you down and wear you out during that period of time.  

Aquarius your opposite is Leo July 23 - Aug 22
Pisces yours is Virgo - Aug 23 - Sept 22
Aries yours is Libra - Sept 23 - Oct 22
Taurus yours is Scorpio - Oct 23 - Nov 21
Gemini yours is Sagittarius - Nov 22 - Dec 21
Cancer yours is Capricorn - Dec 22 - Jan 19
Leo yours is Aquarius - Jan 20 - Feb 18
Virgo yours is Pisces - Feb 19 - March 20
Libra yours is Aries - March 21 - April 19
Scorpio yours is Taurus - April 20 - May 20
Sagittarius yours is Gemini - May 21 - June 20 
Capricorn yours is Cancer - June 21 - July 22


Mom's and dad's you can also use this detail to help plan accordingly for things like taking toddlers on vacation!