1

In normal everyday language use: following examples

exhibit a)Date of birth is after 13/2/2017

exhibit b)Date of birth is before 13/2/2017

does (a) mean 13/2/2017 is also included? (b) mean 13/2/2017 is also included?

  • It would be better to say 'on or after' to make it clearer. – Kate Bunting Mar 17 '17 at 8:38
  • They are normally exclusive, but they raise enough doubt to warrant clarification. It's even worse if you say "until 13/2/2017". – Lawrence Mar 17 '17 at 13:54
  • I don't see any doubt there. After means greater than; before means less than. If you mean greater than or equal to then use on or after. If you mean less than or equal to then use on or before. – Drew Mar 17 '17 at 15:45

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