Title Three
Penalties

Chapter Three
DURATION AND Effect of Penalties

SECTION ONE
Duration of Penalties

ARTICLE 27. Reclusión Perpetua.
— Any person sentenced to any of the perpetual penalties shall be pardoned after undergoing the penalty for thirty years, unless such person by reason of his conduct or some other serious cause shall be considered by the Chief Executive as unworthy of pardon.

Title Four
EXTINCTION OF CRIMINAL LIABILITY and of Civil Liability Resulting from Crime

Chapter One
Extinction of Criminal Liability

SECTION TWO
Partial Extinction of Criminal Liability

ARTICLE 96. Effect of commutation of sentence.
— The commutation of the original sentence for another of a different length and nature shall have the legal effect of substituting the latter in the place of the former.

ARTICLE 97. Allowance for good conduct.
— The good conduct of any prisoner in any penal institution shall entitle him to the following deductions from the period of his sentence :

1. During the first two years of his imprisonment, he shall be allowed a deduction of five days for each month of good behavior ;
2. During the third to the fifth year, inclusive, of his imprisonment, he shall be allowed a deduction of eight days for each month of good behavior ;
3. During the following years until the tenth year, inclusive, of his imprisonment, he shall be allowed a deduction of ten days for each month of good behavior ; and
4. During the eleventh and successive years of his imprisonment, he shall be allowed a deduction of fifteen days for each month of good behavior.

ARTICLE 98. Special time allowance for loyalty.
— A deduction of one-fifth of the period of his sentence shall be granted to any prisoner who, having evaded the service of his sentence under the circumstances mentioned in Article 158 of this Code, gives himself up to the authorities within 48 hours following the issuance of a proclamation announcing the passing away of the calamity or catastrophe referred to in said article.

ARTICLE 99. Who grants time allowances.
— Whenever lawfully justified the Director of Prisons shall grant allowances for good conduct. Such allowances once granted shall not be revoked.