timezone conversion options

[prashanth-hegde]

Problem description
When the json document has a different timezone, I need it converted into a timezone that I specify

Proposed solution
Provide a -z|--zone fieldName=Timezone option for conversion
Support epoch and ISO8601 timestamps

Use Cases

1. For displaying ISO8601 timestamps with specific timezones

Additional context
Example:
Say for the response

curl "https://randomuser.me/api/?results=10" | jpath 'results[dob.age > 40].{name.first, name.last, dob.date}' -t


|           DATE           |   FIRST    |   LAST   |
|--------------------------|------------|----------|
| 1967-02-07T15:26:12.239Z | Dragica    | Klingler |
| 1951-09-07T14:30:19.950Z | Quinn      | Thomas   |

The timezone is specified in UTC.

If I then specify the -z option,

curl "https://randomuser.me/api/?results=10" | jpath 'results[dob.age > 40].{name.first, name.last, dob.date}' -t -z date=America/Chicago


|           DATE                           |   FIRST    |   LAST   |
|------------------------------------------|------------|----------|
| 1967-02-07T10:26:12.239[America/Chicago] | Dragica    | Klingler |
| 1951-09-07T09:30:19.950[America/Chicago] | Quinn      | Thomas   |