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There are some small units of time:

millisecond (thousandth of a second)

microsecond (millionth of a second)

nanosecond (billionth of a second)

picosecond (trillionth of a second)

femtosecond (quadrillionth of a second)

attosecond (quintillionth of a second)

zeptosecond (sextillionth of a second)

The smallest possible unit of time is known as "Planck's time"

It is 5.4 x 10^-44 seconds.

0.000000000000000000000000000000000000000000054 seconds

Hummers yoctosecond (septillionth) is ONLY a mere twenty million million million times longer, which is the answer to your question.

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