DOC: Fix docstring timestamps (Issue #59458)
- [x] Addresses some tasks of #59458
- [ ] [Tests added and passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#writing-tests) if fixing a bug or adding a new feature
- [x] All [code checks passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#pre-commit).
- [x] Added [type annotations](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#type-hints) to new arguments/methods/functions.
- [ ] Added an entry in the latest `doc/source/whatsnew/vX.X.X.rst` file if fixing a bug or adding a new feature.

thanks @mimistiv ! 🙏 

i'll take a closer look later, but I think that `year` might need defining in some other places - i'd suggest checking how/where month is defined and taking inspiration from there

or just splitting `year` off from this PR and doing it separately, so we can merge `month` here quickly > thanks @mimistiv ! 🙏
> 
> i'll take a closer look later, but I think that `year` might need defining in some other places - i'd suggest checking how/where month is defined and taking inspiration from there
> 
> or just splitting `year` off from this PR and doing it separately, so we can merge `month` here quickly

thanks @MarcoGorelli ! I think the issue is related to https://github.com/pandas-dev/pandas/blob/main/pandas/_libs/tslibs/timestamps.pxd#L24, where nanosecond and year are already declared hey @MarcoGorelli! Do you have any advice on how I could best handle this issue? I was thinking I could change the declarations in the pxd file to use _year and _nanosecond similarly to _value but that will mean I need to change it everywhere and I need to be sure what all the uses are.
In the meantime I might create a separate PR to handle the value changes and the month small fix. hey - sure, let's start with a separate pr which we can merge quickly, and then we'll iterate over the trickier one? > hey - sure, let's start with a separate pr which we can merge quickly, and then we'll iterate over the trickier one?

Hey @MarcoGorelli , I split up the PR and the value/month part of it has now been merged! :) Could you please take a look at the suggested solution I have for year and nanosecond here? Hey @MarcoGorelli @mroeschke, could I ask one of you to please take a look at the proposed solution in this PR when you have the time? Thanks in advance! hey - sure, sorry for the delay, i still need to undertsand why `year` needed to be marked as cdef readonly in the first place, it's already a property of the python standard library's datetime.datetime...will get back to you on this This pull request is stale because it has been open for thirty days with no activity. Please [update](https://pandas.pydata.org/pandas-docs/stable/development/contributing.html#updating-your-pull-request) and respond to this comment if you're still interested in working on this. > This pull request is stale because it has been open for thirty days with no activity. Please [update](https://pandas.pydata.org/pandas-docs/stable/development/contributing.html#updating-your-pull-request) and respond to this comment if you're still interested in working on this.

my bad unfortunately, just had a work trip + holiday, and very little / no funded time at the moment - i'll get back to this, i'll remove the 'stale' label Thanks @MarcoGorelli ! I can see that merging with main resulted in a failed unit test which seems unrelated to my PR. Is this a known issue? agree that it's unrelated, but recent commits look green 🥦 so it may have just fixed itself - let's ship this then, thanks for your contribution!