DOC: indicate that origin argument can be a string that is timestamp convertible

[Dr-Irv]

Pandas version checks

• I have checked that the issue still exists on the latest versions of the docs on main here

Location of the documentation

https://pandas.pydata.org/docs/dev/reference/api/pandas.DataFrame.resample.html

Documentation problem

The value origin is documented as:

The timestamp on which to adjust the grouping. The timezone of origin must match the timezone of the index. If string, must be one of the following:

with a list of acceptable strings.

But any timestamp-convertible string is acceptable, so that should be indicated in the docs.

Suggested fix for documentation

    origin : Timestamp or str, default 'start_day'
        The timestamp on which to adjust the grouping. The timezone of origin
        must match the timezone of the index.
        If string, must be Timestamp convertible or one of the following:

[manlattan]

@Dr-Irv If the issue is still open, I am ready to resolve the issue.

[Dr-Irv]

@Dr-Irv If the issue is still open, I am ready to resolve the issue.

I've assigned it to you