It is a pedantic difference. While it's technically incorrect to say PST when it's currently PDT, it doesn't inhibit communication. Both parties will understand it to be that "we meeting at 9am, whenever that happens to be for our California staff" as opposed to "we are meeting at 9am PST, even though no one is currently on PST"
Even my colleague in Arizona is able to follow this despite them not joining the daylight savings time.
Technically incorrect but in a way that doesn't inhibit understanding is the definition of pedantic.
Fyi we ran into an actual real life example of this being a real problem since Arizona doesn't do daylight savings time it can cause miscommunication and people can miss meetings if you put the wrong S vs D. It's even worse when you consider some countries switch over at different times from S to D.
Edit
Sorry I missed the Arizona part of your comment but there are rare occasions where it can mislead people.
Yeah, I do think it's worth getting right. For the most part even those that know better but there is significant meaning there. I suspect it mostly wasn't a problem for our AZ person because the company essentially operated out of Chicago time, so in his case it was the difference between discussed times being 1 or 2 hours off.
I was just being pedantic about it being pedantic .
When someone sets up a meeting with me in a different time zone I'll google "what time is it in [timezone]?" then calculate the difference with my timezone and apply that the day of the meeting.
Even my colleague in Arizona is able to follow this despite them not joining the daylight savings time.
Technically incorrect but in a way that doesn't inhibit understanding is the definition of pedantic.