I just received this alert in Chrome browser from my Google Calendar:
I’m signed into the same Google user account in both the Chrome browser, and my Google Calendar online.
As you can see, it says that something is in “1h” (one hour), but as you can also clearly see, 7pm (the event’s start time) is 2 hours away from the current time (5pm. It was 5:02pm when I took the screenshot) on my Windows 10 PC.
There are my Google Calendar Time Zone settings:
Strangely, in the options, there’s only Mountain Standard Time (MST) available. No Mountain Daylight Time (MDT).
I thought that Google might be ignoring MDT and giving me the alert as if it were MST. But that doesn’t make sense either. Because even in that case, both times (on my PC, and the time for the event) would still be 2 hours apart and it should still say that the event is going to happen in 2 hours.