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This helper template calculates periods for Danish certifications, as stated in the following sources:
It returns:
Before 1994 | Before April 2003 | Before February 2007 | Before April 2009 | Before 7 January 2011 | Before 17 November 2014 | Before 1 April 2016 | From 1 April 2016 |
---|---|---|---|---|---|---|---|
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
Returns 0 if the data provided is not sufficient.