I agree that divisions of 2^27 or 2^28 are in a sense less arbitrary than deci-arcseconds – but while the base (2) seems non-arbitrary, the same can&#x27;t be said for the exponent (27 or 28). Wouldn&#x27;t 2^32 be even better? A bit over 19 days.<p>Or I would argue 2^16 is even less arbitrary than 2^32. 2^(2^(2^2)) feels less arbitrary to me than 2^(2^5). A bit over 3,433 years.<p>This gives me an idea – write dates&#x2F;times in hexadecimal. The first four hexits refer to units of 2^16 (roughly 3,433 years). The next four hexits refer to units of 2^32 (roughly 19 days). Then come units of 2^48 (roughly 25 seconds). Then units of 2^64 (about 385 microseconds), etc. However, you need to pick an epoch (zero point), and any choice of epoch is going to feel much more arbitrary than the system as a whole.