DEP: Deprecate date_format="epoch" in to_json

[WillAyd]

Feature Type

• Adding new functionality to pandas

• Changing existing functionality in pandas

• Removing existing functionality in pandas

Problem Description

While date_format="epoch" made sense when we exclusively handled ns-precision timestamps since the epoch, it has started to lose its meaning as we support other precisions.

If you try to roundtrip JSON produced with this argument you just have to guess what the precision is

Feature Description

See above

Alternative Solutions

See above

Additional Context

No response

[Aloqeely]

So after this change, to_json will only support the iso date format? Not sure how I feel about this, but I'm open to working on it as long as nobody's opposed

[WillAyd]

@Aloqeely that is correct