I hope that I am missing something.

The STCKE instruction, an unprivileged one, yields a 16-byte value at
a nominated storage location.

The difference between two such values, trimmed of their two rightmost
bytes (the programmable field), yields an elapsed time.

This value can then be formatted in a variety of ways.

No use of the TIME macro need or should figure in this operation.  Any
leap-second corrections would, for example, be washed out by the
subtraction:

(T + L) - (t + L) = T + L - t - L = T - t.

Why all this pother?

John Gilmore, Ashland, MA 01721 - USA

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John Gilmore, Ashland, MA 01721 - USA

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