User:Muhandes/Certification Table Entry/Sales/BelgianPeriod/doc

This helper template calculates periods for Belgian certifications, as stated in the following source:

  • [1] - certification until 2006
  • [2] - certification from October 2007
  • [3] - certification from 2009 (changed on April 2008 [4])
  • [5] - certification from July 2018

There is no data for the interim period

It returns:

Before 2006 Before October 2007 Before April 2008 before July 2018 from July 2018
1 2 3 4 5

Returns 0 if the data provided is insufficient

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