The article applies only to prisoners who escaped.
There is a deduction of 1/5 of the period of sentence of prisoner
who, having evaded the service of his sentence during the
calamity or catastrophe mentioned in Art 158, gives himself up
to the authorities within 48 hours following the issuance of
the proclamation by the President announcing the passing away
of the calamity or catastrophe.
The deduction is based on the original sentence and not on the
Art 158 provides for increased penalties:
A convict who has evaded the service of his sentence by leaving
the penal institution on the occasion of disorder resulting from
conflagration, earthquake or similar catastrophe or during
mutiny in which he did not participate is liable to an increased
penalty (1/5 of the time still remaining to be served – not to
exceed 6 months), if he fails to give himself up to the
authorities within 48 hours following the issuance of a
proclamation by the President announcing the passing away of
ART. 99: WHO GRANTS TIME ALLOWANCES
The authority to grant time allowance for good conduct is
exclusively vested in the Director. (e.g. provincial warden
cannot usurp Director’s authority)
It is not an automatic right, and once granted,
cannot be revoked by him.