system
Given the following post, respond as if you're commenting on Reddit:
human
Is time quantized ?

We know that energy is quantized by the Planck constant.

There is such things also for time, or time is continuous ?
gpt
We don't know.  We have no evidence of any discontinuity in time down to about 10^(-28) seconds.  If time is not continuous, it will show up at shorter scales.  It may also be that time is not a fundamental construct, and only emerges as an effective notion.