Now, if you were looking for an explanation of how a " garden " is used in astronomy calculations, it's rather simple
This requires that one consider the polysemic nature of the symbol, which as a number, represents 3600
If someone had bothered to click on the diagram at the top right of the page on Mesopotamian metrology ( I linked ), they would have seen it explained as it related to keeping time ( Or you may recognize it from Newton's calculations ? )
1/3600 of the moon's orbit ( The linear path ) was equated with ~ 2 metric seconds on a pendulum of 360 grains in length
This in turn was counted off on the fingers, each " finger " ( A horn ) is taken to be approximately 1°, which is one arcminute ( which is 3600 arcseconds )
This is
clearly explained on the bottom right of the page, where it speaks of the units of the " hand ", " finger " and " grain "
These units and the various methods employed, allowed one to count of the actual linear movement of the moon through space on the hands, as like the diagram says " they considered time to be something tangible one could hold in their hand "
One could easily say this is irrelevant, but they would be ignoring the fact that the system by which they keep time in Judaism is based on the fundamental Mesopotamian unit of the " grain ", pronounced " shay "
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" The duration of a part or
chelek equals the earlier Babylonian
barleycorn, the smallest Babylonian time unit, which was 1/72 of a
time degree. The time degree was the principal Babylonian unit of time, corresponding to the time required for one degree of motion of Sun across the meridian = 1/360 of a solar day = 1440 minutes per day/360 time degrees per day = 4 minutes per time degree. Thus 4 minutes divided by 72 = 1/18 of a minute = 1
chelek. The time degree also very nearly equals the difference in duration between the solar day and sidereal day, which in the present era amounts to about 3 minutes and 55.9 seconds. The Babylonian
finger was 6 barleycorns = 1/12 of a time degree = 1/3 of a minute = 20 seconds of time. The
cubit was 180 barleycorns = 5/2 time degrees = 10 minutes of time. The
hour itself, corresponding to 15 time degrees, was a Seleucid time unit that was probably obtained from Egypt. The Babylonian
beru or double hour, corresponded to 30 time degrees. The mean synodic month in Babylonian time units was 29 days, 6 double hours, 11 time degrees, and 1 barleycorn "
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Sumerian:
še [BARLEY] (28315x: ED IIIa, ED IIIb, Ebla, Old Akkadian, Lagash II, Ur III, Early Old Babylonian, Old Babylonian, Middle Babylonian, 1st millennium, unknown) wr. še "barley; grain; a unit of length; a unit of area; a unit of volume; a unit of weight" Akk. uţţatu; û; uţţatu
Granted, that's a rather simplistic overview, but we can get into a discussion on the minutiae of Mesopotamian and Egyptian mathematics used by priests if you like, I'm fully prepared to discuss that as well