The average duration between any two moon phases is 29.530589 days.
Many watches use 29.5 days between phases for simplicity. This results in the watch's moon phase display being off by one day for every two years the watch operates.
There are a few watch manufacturers that use epicyclic gear trains to make the moon phase calculation more precise. An example: the Ochs und Junior moon phase watch will operate for 3,478.27 years before its moon phase display is off by one day (https://www.ochsundjunior.swiss/watches/moon-phase/).
Consider the possibility that one diamond goes from the steering tube to the right rear axle mount and the second diamond goes from the steering tube to the left rear axle mount.
I agree, I would like an ePub to have a robust note taking and exporting ability.
For instance, if I highlight in Chapter 8 "In 539" [next paragraph] "Belisarius" [next paragraph] "marched on Ravenna" [10 paragraphs later] "In 540 Belisarius entered Ravenna".
I would like to export this with the Chapter header and detailed highlight locations OR just as one sentence with subtle links to the locations.
Yes this is true, "the conversions did not generally work in their (employee) favor, although the old old timers were allowed to stay on the pension".
Once caveat was that the IBM older pension plan was more valuable than a 401k plan because IBM investment strategy was far better than the average 401k investor options.
"Conversions did not generally work in their favor" for these reasons:
1) IBM originally announced (around 1999) that all active employees were converted to the less desirable 401k plan. After a lawsuit, IBM had a formula for who got the more valuable older pension. Two people have 18 years of service for IBM. The younger one (say 45 years old) had no choice but to switch. The older one (say 50 years) was allowed a choice.
2) IBM was able to control the amount for the 401k payout. Their pension value (easily calculated future value based on salary and years of service) was converted into present value based on IBM's estimation of the amount you could make in free market investments. So essentially they said "Your $2M pension is worth $36k today because we calculated you can make 20% per year in investing. Here's your $36k for 18 years of service." (By the way, IBM salaries were usually lower than most other companies because they always touted their great pension plan that no others could match.)
Both these points were argued in courts. The first point was won by some employees, not all, only IBM knows. The second point was won by IBM.