Date Schema Computations
- Megan Forbes
IF |
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(always ignore) |
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THEN |
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Earliest and latest |
Earliest |
Year |
Month |
Day |
Certainty |
Qualifier |
Value |
Unit |
Scalar value |
YYYY-MM-DD |
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1977 |
09 |
05 |
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1977-09-05 |
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Latest |
Year |
Month |
Day |
Certainty |
Qualifier |
Value |
Unit |
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2011 |
11 |
16 |
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2011-11-16 |
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Earliest only |
Earliest |
Year |
Month |
Day |
Certainty |
Qualifier |
Value |
Unit |
Scalar value |
YYYY-MM-DD |
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1977 |
09 |
05 |
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1977-09-05 |
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Latest |
Year |
Month |
Day |
Certainty |
Qualifier |
Value |
Unit |
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1977-09-05 |
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Earliest only |
Earliest |
Year |
Month |
Day |
Certainty |
Qualifier |
Value |
Unit |
Scalar value |
YYYY-MM |
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1977 |
09 |
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1977-09-01 |
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Latest |
Year |
Month |
Day |
Certainty |
Qualifier |
Value |
Unit |
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1977-09-30 |
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Earliest only |
Earliest |
Year |
Month |
Day |
Certainty |
Qualifier |
Value |
Unit |
Scalar value |
YYYY |
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1977 |
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1977-01-01 |
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Latest |
Year |
Month |
Day |
Certainty |
Qualifier |
Value |
Unit |
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1977-12-31 |
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Earliest only |
Earliest |
Year |
Month |
Day |
Certainty |
Qualifier |
Value |
Unit |
Scalar value |
with single qualifier |
|
1977 |
09 |
05 |
|
+ |
5 |
YEARS |
1977-09-05 |
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Latest |
Year |
Month |
Day |
Certainty |
Qualifier |
Value |
Unit |
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1982-09-05 |
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Earliest only |
Earliest |
Year |
Month |
Day |
Certainty |
Qualifier |
Value |
Unit |
Scalar value |
with dual qualifier |
|
1977 |
09 |
05 |
|
+/- |
5 |
YEARS |
1972-09-05 |
USE MINUS |
Latest |
Year |
Month |
Day |
Certainty |
Qualifier |
Value |
Unit |
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1982-09-05 |
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Latest only |
Earliest |
Year |
Month |
Day |
Certainty |
Qualifier |
Value |
Unit |
Scalar value |
YYYY-MM-DD |
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2011-11-16 |
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Latest |
Year |
Month |
Day |
Certainty |
Qualifier |
Value |
Unit |
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2011 |
11 |
16 |
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2011-11-16 |
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Latest only |
Earliest |
Year |
Month |
Day |
Certainty |
Qualifier |
Value |
Unit |
Scalar value |
YYYY-MM |
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2011-11-01 |
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Latest |
Year |
Month |
Day |
Certainty |
Qualifier |
Value |
Unit |
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2011 |
11 |
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2011-11-30 |
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Latest only |
Earliest |
Year |
Month |
Day |
Certainty |
Qualifier |
Value |
Unit |
Scalar value |
YYYY |
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2011-01-01 |
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Latest |
Year |
Month |
Day |
Certainty |
Qualifier |
Value |
Unit |
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2011 |
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2011-12-31 |
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Latest only |
Earliest |
Year |
Month |
Day |
Certainty |
Qualifier |
Value |
Unit |
Scalar value |
with single qualifier |
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2006-11-16 |
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Latest |
Year |
Month |
Day |
Certainty |
Qualifier |
Value |
Unit |
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2011 |
11 |
16 |
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- |
5 |
YEARS |
2011-11-16 |
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Latest only |
Earliest |
Year |
Month |
Day |
Certainty |
Qualifier |
Value |
Unit |
Scalar value |
with dual qualifier |
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2006-11-16 |
USE ADD |
Latest |
Year |
Month |
Day |
Certainty |
Qualifier |
Value |
Unit |
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|
2011 |
11 |
16 |
|
+/- |
5 |
YEARS |
2016-11-16 |
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Earliest and latest |
Earliest |
Year |
Month |
Day |
Certainty |
Qualifier |
Value |
Unit |
Scalar value |
Combination (e.g.) |
|
1977 |
09 |
05 |
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1977-09-05 |
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Latest |
Year |
Month |
Day |
Certainty |
Qualifier |
Value |
Unit |
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2011 |
|
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2011-12-31 |
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Earliest and latest |
Earliest |
Year |
Month |
Day |
Certainty |
Qualifier |
Value |
Unit |
Scalar value |
YYYY-MM-DD |
|
1977 |
09 |
05 |
|
- |
5 |
DAYS |
1977-08-31 |
with single qualifiers |
Latest |
Year |
Month |
Day |
Certainty |
Qualifier |
Value |
Unit |
|
|
2011 |
11 |
16 |
|
+ |
5 |
YEARS |
2016-11-16 |
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Earliest and latest |
Earliest |
Year |
Month |
Day |
Certainty |
Qualifier |
Value |
Unit |
Scalar value |
YYYY-MM-DD |
|
1977 |
09 |
05 |
|
+/- |
5 |
YEARS |
1972-09-05 |
with dual qualifiers |
Latest |
Year |
Month |
Day |
Certainty |
Qualifier |
Value |
Unit |
|
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|
2011 |
11 |
16 |
|
+/- |
5 |
MONTHS |
2012-04-16 |
Notes
- If +/- is used with an earliest date, compute as though it is a -
- If +/- is used with a latest date, compute as though it is a +
- If the year is not present, do not compute
- If the year and day are present but no month, compute as the first of the year (ignore day and any month or day qualifiers)