Property:sortdate

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Description: Defines the date as a single number by which the item can be sorted automatically.
Type: Number


Format

  • Positive or negative decimal number in years.
  • Concerning sortdate values more accurate than years, the decimal positions are used in the format Y.MMDDhhmmss for convenience (i.e. 1990.0123 for 23 Jan 1990, not 1990 + 22÷365 = 1990.0603 vel sim.).
  • Negative values shall only occur as integer (i.e. without decimal positions), to avoid complications.
  • The value 0 is used for an unknown date.
  • Examples: -300 (for 300 BC), 1893 (for 1893), 1990.12312230 (for 31 Dec 1990, 10:30 p.m.), 0 (for unknown)

Guidelines

for determining the sortdate:

  • If absolute dates are known these are used
  • If approximate dates are known these are used, i.e. , e.g. "c. 250 BC" = -250 or "around the first quarter of the 1st century BC" = -75.
  • If periods of time are known the median point of time should be used, e.g. "4th century BC" = -350 or "125-40 BC" = -82.

Maps

Dating of archaeological objects:

Early and Middle Phases

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Marker 360.png earlier than 440 BC (40); Marker 030.png 440 to 376 BC (33); Marker 060.png 375 to 201 BC (39)

Late Phases

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Marker 090.png 200 to 101 BC (41); Marker 180.png 100 to 20 BC (183); Marker 240.png later than 20 BC (37); Marker 000.png undefined (65)

Please note that the value of the Property:sortdate is only the arithmetic mean of the object's dating. Absolute values used for archaeological periods are defined on Property:culture_archaeological.

Statistics

Objects

Number of pages in the Category:Object (371) per "sortdate" (value 0 omitted):

sortdate occurrence  
-720+
0 0.00 % show list
-670+
5 1.34 % show list
-620+
4 1.07 % show list
-570+
6 1.61 % show list
-520+
13 3.50 % show list
-470+
32 8.62 % show list
-420+
15 4.04 % show list
-370+
24 6.46 % show list
-320+
12 3.23 % show list
-270+
0 0.00 % show list
-220+
7 1.88 % show list
-170+
24 6.46 % show list
-120+
117 31.53 % show list
-70+
75 20.21 % show list
-20+
26 7.00 % show list
30+
10 2.69 % show list
80+
0 0.00 % show list
130+
0 0.00 % show list

Arithmetic mean: -175.062, Median: -100

Inscriptions

Number of pages in the Category:Inscription (408) per "sortdate" (value 0 omitted):

sortdate occurrence  
-720+
0 0.00 % show list
-670+
5 1.22 % show list
-620+
5 1.22 % show list
-570+
6 1.47 % show list
-520+
15 3.67 % show list
-470+
30 7.35 % show list
-420+
15 3.67 % show list
-370+
30 7.35 % show list
-320+
13 3.18 % show list
-270+
2 0.49 % show list
-220+
9 2.20 % show list
-170+
28 6.86 % show list
-120+
131 32.10 % show list
-70+
79 19.36 % show list
-20+
29 7.10 % show list
30+
10 2.45 % show list
80+
0 0.00 % show list
130+
0 0.00 % show list

Arithmetic mean: -173.674, Median: -100

References

Number of pages in the Category:Reference (1300) per "sortdate" (value 0 omitted):

sortdate occurrence  
1800+
0 0.00 % show list
1810+
0 0.00 % show list
1820+
4 0.30 % show list
1830+
2 0.15 % show list
1840+
3 0.23 % show list
1850+
5 0.38 % show list
1860+
18 1.38 % show list
1870+
21 1.61 % show list
1880+
17 1.30 % show list
1890+
18 1.38 % show list
1900+
20 1.53 % show list
1910+
24 1.84 % show list
1920+
18 1.38 % show list
1930+
22 1.69 % show list
1940+
17 1.30 % show list
1950+
38 2.92 % show list
1960+
62 4.76 % show list
1970+
109 8.38 % show list
1980+
185 14.23 % show list
1990+
229 17.61 % show list
2000+
247 19.00 % show list
2010+
201 15.46 % show list
2020+
40 3.07 % show list
2030+
0 0.00 % show list

Arithmetic mean: 1,980.118, Median: 1,994

Showing 20 pages using this property.