# Number - Babylonian numeral system, base-60

The sexagesimal numeral system or base-60, was the first positional system in the first language developed the wiki/Cuneiform

It was used by astronomers

Numeral System Parts
Babylonian numerals and other mesopotamian systems (Hellenistic numbers) integral and fractional portions (see radix)
Greek numerals for the fractional portions only

## Time and angle

Its influence is present today in modern:

• time (60 minutes in an hour)
• and angles (360 degrees in a circle)

but in both cases,

only minutes and seconds use sexagesimal notation

:

• angular degrees and hour can be larger than 59 (one rotation around a circle is 360°, two rotations are 720°, etc.),
• and both time and angles use decimal fractions of a second.

Example: Modern time separates each position by a colon or point.

• time
10:25:59 (10 hours 25 minutes 59 seconds). 

• angles
10°25'59" (10 degrees 25 minutes 59 seconds).


## Documentation / Reference

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