meetup: correct example in description.md

[wolf99]

The third Tuesday of January 2017 was the 17th and thus should either be specified as a "-teenth" or be a different Tuesday. I went with the latter.

This confused me no end when trying to grok what qualified a day to be "teenth" or not >.<

[wolf99]

Hmm, checking the canonical data I think maybe I still haven't groked it!
I see the following examples (among others) from that file:

    {
      "description": "second Tuesday of May 2013",
      "property": "meetup",
      "year": 2013,
      "month": 5,
      "week": "second",
      "dayofweek": "Tuesday",
      "dayofmonth": 14
    },

    {
      "description": "second Wednesday of August 2013",
      "property": "meetup",
      "year": 2013,
      "month": 8,
      "week": "second",
      "dayofweek": "Wednesday",
      "dayofmonth": 14
    },

These specify days that have a date that is a teen, but that are not expected to return "teenth"?
So what exactly is it that qualifies a day of the week as "teenth" or not?

[m-dango]

I think you may be looking at it backwards. The description of the date goes in e.g second/-teenth Tuesday of May 2013, and the actual date e.g. 2013-05-14 comes out.

Dates which are -teenth will always overlap with dates in either second or third.

[ErikSchierboom]

Dates which are -teenth will always overlap with dates in either second or third.

Well put. The input to this problem is the year/month/day (first, second, third, teenth, last) and the output is a date. Hence why there will be an overlap.

[wolf99]

Light dawns. Thanks folks!

[Insti]

The input should be a phrase and the output should be a date.
The exploded nature of the properties in the canonical data is not really helpful here.
Hopefully we can fix this.
See also: #996

    {
      "description": "why this date is useful to test",
      "property": "meetup",
      "input": { "phrase": "second Wednesday of August 2013" },
      "expected": { "year": 2013, "month": 8, "dayofmonth": 14 }
    },