GOD'S WORD® Translation
Whoever obeys his commands will avoid trouble. The mind of a wise person will know the right time and the right way [to act].

American Standard Version
Whoso keepeth the commandment shall know no evil thing; and a wise man's heart discerneth time and judgment:

Berean Study Bible
Whoever keeps his command will come to no harm, and a wise heart knows the right time and procedure.

Douay-Rheims Bible
He that keepeth the commandments shall find no evil. The heart of a wise man understandeth time and answer.

English Revised Version
Whoso keepeth the commandment shall know no evil thing; and a wise man's heart discerneth time and judgment:

King James Bible
Whoso keepeth the commandment shall feel no evil thing: and a wise man's heart discerneth both time and judgment.

World English Bible
Whoever keeps the commandment shall not come to harm, and his wise heart will know the time and procedure.

Young's Literal Translation
Whoso is keeping a command knoweth no evil thing, and time and judgment the heart of the wise knoweth.

Ecclesiastes 8:5 Additional Translations ...