[QUESTION] What date format is allowed in NGSI v2 using ISO8601?

[iariasleon]

What date formats are allowed in NGSI v2 using ISO8601?

We see that in NGSI v2 will be use ISO8601, but this norma has several date formats.
https://en.wikipedia.org/wiki/ISO_8601#Times

Some examples of dates:

                                            Basic                                Extended
    -------------------------------------------------------------------------------------------------------------------      
    Calendar date
        local:                           20071103T131805                   2007-11-03T13:18:05
        UTC:                             20071103T161805Z                  2007-11-03T16:18:05Z
        local (relative):                20071103T131805-0300              2007-11-03T13:18:05-03:00

    Ordinal date
        local:                           2007307T131805                    2007-307T13:18:05
        UTC:                             2007307T161805Z,                  2007-307T16:18:05Z,
        local (relative):                2007307T131805-03                 2007-307T13:18:05-03

    Weekly date
        local:                           2007W446T131805                   2007-W44-6T13:18:05
        UTC:                             2007W446T161805Z                  2007-W44-6T16:18:05Z
        local (relative):                2007W446T131805-0300              2007-W44-6T13:18:05-03:00

[fgalan]

It would be interesting to analyze the support of existing ISO8601 C/C++ libraries. If we find a suitable library that support all them, then specification may cover all cases with enough implementability guarantees.

[fgalan]

This issue has been considered not essential to be included in final version of NGSIv2, so it will be closed.

CC: @jmcanterafonseca