Question: I am trying to understand when my probation period ends.
My contract states that

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> The first 6 months is probation period and notice is 1 week for either party and once its ended notice is 1 month.
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> 
> For avoidance of doubt, Probationary period is only over once the manager confirms over email its ended.
> 
> 
> 

In my company there is no official confirmation usually when one's probation period ends.

I am planning to change jobs due to personal reasons and not sure if the probation period ends in the first 6 calender months or the first 6 months counted from the date of joining. (My date of joining was towards the end of April 2019)

I am currently nearing the completion of the first 6 months from the date of joining hence the question whether my notice is 1 week or a month.

Answer: 
For most employers, **this won't be an issue or seen as a negative in reviewing your resume/application.** There are a variety of ways that background-checking agencies can verify that you were employed even if the business is no longer operating.

If you're concerned that you won't be able to provide a reference, you should **consider asking a previous manager to act a reference, even if they are no longer employed at the same firm.** You might be able to reach previous managers on LinkedIn if you don't have recent contact info.
There is no reason you cannot prove your employment at a company. You should be able to show your old pay stubs, as well as state and federal tax records that prove your previous employment.