Clock accurate to 1 second in the lifetime of the universe

I was really surprised to hear that one second in a million years is only just sufficient for the accurate functioning of GPS. But if you think about it light covers a distance of 300,000,000 metres in one second, which would represent a drift of 300 metres a year or nearly a metre a day for the accuracy of GPS.
So in order to maintain positional accuracy to within one metre and a clock accurate to one second in a million years, all the GPS satellites would need to be synchronised once a day.
A clock that can measure time to within 1 second in ~15 billion years represents an accuracy of 2 cm a year. This is is not very much slower than continental drift and is equivalent one wavelength of green light every 3 seconds.
I don't think clocks accurate to 1 second in 15 billion years will be required for day-to-day use like GPS for the time being, but I bet you a pint of frothy nut brown ale that someone will find some use for a clock that accurate some time soon. I wouldn't be surprised if that person is a cosmologist.

Astrology

Astrology predicts the destinations of billions of people around the world according to the positions of the stars and planets, accurately correlated to the time, date and location of their birth. Just as the sun and the moon affect the tides, the planets emit energy fields which synergises with the subquantum harmonics of your chromodynamic fluids. This causes and affects time-reversal in your aural spheres like a dimentially multitemporal mirror.
Through this the future and the past are reflected through the flux of zero point energy fields and when these decohere, your destiny is revealed.
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