…which is based on seconds, which is based on ??? IDFK (neither would they)
“The second, symbol s, is the SI unit of time. It is defined by taking the fixed numerical value of the caesium frequency, ΔνCs, the unperturbed ground-state hyperfine transition frequency of the caesium 133 atom, to be 9 192 631 770 when expressed in the unit Hz, which is equal to s−1.” https://www.bipm.org/en/si-base-units/second
“Dirk Moeller didn’t know if he could fart his way into a major diplomatic incident. But he was ready to find out.”
-John Scalzi, The Android’s Dream