You can buy all kinds of conventional clocks that have hands and numbers for easy reading. Or, like [Fabio Ricci], you could build yourself something a little more esoteric, like this neat shadow ...
Jackson, K. and Hart, L. (2026) The Status of the Gravimetric Geoid across Nigeria. International Journal of Geosciences, 17, 49-65. doi: 10.4236/ijg.2026.171004 .
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