Date/Time support

[printfn]

• [x] Date objects: '2022-01-01' to date
• [x] Better syntax for creating dates: @1970-01-01
• [ ] ISO 8601 output format
• [x] Simple date arithmetic: date + 5 days
• [ ] Different date output formats
• [ ] Durations, e.g. 2:23:28.936
  • [ ] Parse
  • [ ] Output
• [ ] Timestamps syntax?
  • [ ] Timezones

[britcey]

Unix epoch to timestamp would be very useful:

ideally, something like:

1666202400000 / 1000 to date Wed Oct 19 18:00:00 UTC 2022

(I have a file w/ a timestamp in milliseconds since the epoch)

[woodRock]

Date differences in ISO 8061 would a cool feature, for example

> '2022-11-06' - '2022-07-31'
98 Days

[frectonz]

Can |2022|01|01| be the syntax for dates?

[printfn]

I went ahead and implemented a simple date syntax:

> @1970-01-01
Thursday, 1 January 1970
> @2000-01-01 + 10000 days
Wednesday, 19 May 2027

[illdefined]

I often have to convert dates and times between different time zones and I would love to be able to that with fend.