Simplify the following text for a Grade 7 native English-speaking person.
Original: In tropical astrology , the Sun is considered to be in the sign Leo from July 23 to August 22 , and in sidereal astrology , from August 16 to September 15 .
Simplified: In tropical astrology , the Sun is considered to be in the sign Leo from July 23 to August 22 . In sidereal astrology the sun is said to be in Leo from August 16 to September 15 .