Daylight savings time change strangeness

[Cantor, Scott]

> ​I'm obviously being incredibly thick today​. We only saw the problem with one
> vendor, all others worked as expected.

Well, I would hope. It takes a special level of bad operations to screw up DST in 2017.

> Most notably we didn't have any
> issues with any Shibboleth SP products, I assumed it's because both the IdP
> sends the SAML timestamps in UTC and the SP compares them that way. UTC
> as far as I know doesn't have daylight savings time, so that made sense to me
> why they all worked (And most other vendors too).

No, if it worked then it's because the server's time was correct, nothing more. Test it if you want and satisfy yourself. 

-- Scott