If you advance the clock 15minute, uptime advances its starting time by 15 minutes.

and what happens if you "retard" the system clock? Perhaps you are confusing the first column in uptime's output (which is the current clock time) with the second column which is HH::MM of uptime? (Thank you Anonymous Re^2: $BASETIME (^T) inaccurate? for pointing this)

In reply to Re^2: $BASETIME (^T) inaccurate? by bliako
in thread $BASETIME (^T) inaccurate? by MikeL

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