Would it be possible to add to SMW two new date formats? That is: BP and b2k. They are widely used in geology and archaeology. The "BP" is acronym to "before present" and is counted in years before 1950 (f.e., year 1900 = 50BP). The "b2k" means "years before year 2000", and is counted analogically: calendar year 1900 = 100b2k.
Of course it is possible to calculate dates from BC notation, but it makes some mess, because the BP and b2k notations are standard in earth sciences.
Thanks in advance,
Feature requests should be made at [0] in order to allow for appropriate tracking and analysis.
[0] https://github.com/SemanticMediaWiki/SemanticMediaWiki/issues
