I am calculating the differences between graduated betas v.s. discontinued betas for an academic paper. I previously asked a [question](https://meta.stackexchange.com/questions/243667/how-to-determine-number-of-days-in-beta-for-a-graduated-site) regarding how to calculate the number of days in a beta site and the response was helpful but does not answer a particular case: what is the close date for a closed beta?

For example: the [Libraries & Information Science](http://area51.stackexchange.com/proposals/12432/libraries-information-science) public beta was unsuccessful and the site was closed down. My issue is that the end dates of each phase are not specified: it is left to the reader to deduce the end dates by looking at the next phase start date. When there is no next phase - as the site has failed - there is nothing to help guide the reader.

The only thing that is supplied is the "number of days in beta" but it is unclear whether "number of days in beta" is referring to:

1. The number of days in private beta
2. The number of days in public beta
3. The total number of days in beta (i.e. inclusive of both private
beta and public beta)

I appreciate any insights!