### Bug description

## Unexpected Behaviour in Date Processing

This date format:

```
---
date: 04 08 2022
date-format: "Do MMMM YYYY"
lang: en-GB
---
```

correctly produces `4th August 2022` however other entry formats use American date interpretations.

According to the documentation [dates](https://quarto.org/docs/reference/dates.html), this is how it is described, however, it is surprising not to respect the geographic region of the locale `en-GB` 

> The [lang](https://pandoc.org/MANUAL.html#language-variables) document option is used to identifies the main language of the document using IETF language tags (following the [BCP 47](https://tools.ietf.org/html/bcp47) standard), such as en or en-GB.
>
> ...as well as the application of other language specific rules to document processing. - [lang-option](https://quarto.org/docs/authoring/language.html#lang-option)

## Expected Behaviour

```
---
title: Test
date: 04/08/2022
date-format: "Do MMMM YYYY"
lang: en-GB
---
```

Results in `4th August 2022`  not ~~`8th April 2022`~~

## Comparison to Pandoc native behaviour

Having used Pandoc for a while I thought that this worked, however it appears that I was mistaken and Pandoc doesn't format dates. I maybe wrong.

## Additional Info

OS: Linux/Ubuntu 22.04

### `quarto check` Output

[✓] Checking Quarto installation......OK
      Version: 1.0.37
      Path: /opt/quarto/bin

[✓] Checking basic markdown render....OK

[✓] Checking Python 3 installation....OK
      Version: 3.10.4
      Path: /usr/bin/python3
      Jupyter: 4.11.1
      Kernels: python3, julia-1.6, julia-1.7

[✓] Checking Jupyter engine render....OK

[✓] Checking R installation...........(None)

      Unable to locate an installed version of R.
      Install R from https://cloud.r-project.org/

### `quarto tools check` Output

[✓] Inspecting tools

Tool         Status            Installed     Latest  
chromium     Not installed     ---           869685  
tinytex      Not installed     ---           v2022.08

### Checklist

- [X] [formatted your issue](https://yihui.org/issue/#please-format-your-issue-correctly) so it is easier for us to read?
- [X] included a minimal, fully reproducible example in a single .qmd file? Please provide the whole file rather than the snippet you believe is causing the issue.
- [X] documented the quarto version you're running, by pasting the output from running `quarto check` in the "Quarto Check Output" text area?
- [X] documented the version of the quarto tools you're running, by providing the output from running `quarto tools check` in the "Quarto Tools Check Output" text area?
- [ ] documented the RStudio IDE version you're running (if applicable), by providing the value displayed in the "About RStudio" main menu dialog?
- [X] documented which operating system you're running? If on Linux, please provide the specific distribution as well.
- [X] upgraded to the latest version, including your versions of R, the RStudio IDE, and relevant R packages?
dragonstyle
2022-08-04T20:10:27Z
a2k42
bug
Future
closed
Unexpected Behaviour in Locale Date Processing
https://github.com/quarto-dev/quarto-cli/issues/1688