Is it possible for Sims to age up on their own?

Question

Birthday parties are not required for a Sim to be old. On the last day of the Sim's age period, they will age on their own if left alone. Children will never grow up into adults in The Sims.

Hagrid P Hazard · Accepted Answer

Birthday parties are not required for a Sim to be old. On the last day of the Sim's age period, they will age on their own if left alone. Children will never grow up into adults in The Sims.

Is it possible for Sims to age up on their own?

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