If you were born between the 20th and 24th of the month your Sun may be in either of two signs (this is called being born on the "cusp") and only by knowing the actual date and year,
( sometimes the actual birth time and place is needed) can we be sure which sign your Sun was actually in at birth.
If you are looking for compatible others, you may want to use both signs until you have an actual chart calculated.
Your SOLAR 5th House will be 5 signs from your Sun sign.
Approximate positions of the Sun:
