Are indulgences outside of time?

If purgatory is outside of time, like Heaven and hell, how can indulgences reduce someone’s time in purgatory?

The following links should assist you in better understanding the Catholic Church’s teaching on Indulgences. If you have any further questions or concerns that are not answered by these links, please contact Catholic Answers directly.
**Recommended Reading:
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[LIST]
*]Myths about Indulgences
*]Primer on Indulgences
*]CATECHISM OF THE CATHOLIC CHURCH ON INDULGENCES
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