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    Not really a great argument - it's just as common to search for things happening in specific months rather than specific years. Commented Sep 25, 2018 at 14:25
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    If 1970* and 197005* represent "glob" wildcard syntax, then you could search a bunch of MMDDYYYY dates by searching for the glob *1970 or 05*1970. Your answer might be implicitly assuming some extra constraint that you didn't explicitly mention, and could be improved by explaining your assumption. Commented Sep 26, 2018 at 0:01
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    This is sort of a side-effect or another way of describing the sort-key order mentioned by other answers. But this explanation falls apart unless you restrict it to searching on prefixes. (Easier to index for, but by no means required). Commented Sep 26, 2018 at 8:13
  • It also means you can select a sequence of dates with relatively simple regexp's... Commented Oct 3, 2018 at 2:43