This could be needed either for troubleshooting any issue or just for knowledge.
The devices uptime is the time your gear is running or has been running actively.
One uses a system panel, and the other uses a Terminal.

Next, click theSystem Reportoption to launch the System panel window.
In the System Report panel, punch the Software option.
You will see the Terminal listed there; open it by clicking.

When the Terminal opens, bang out the uptime command and press enter.
The terminal will now show you the information regarding the Uptime of your Mac.
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