All-day events disappearing at 6 PM
Reported by one of our users:
I've only just started testing Niagara, and I'm on the Pro trial. Overall, the calendar (both widget & agenda) is working properly for me, except: All Day events show up in the agenda (and the widget if there aren't any timed events) properly until the evening at 6pm, at which point they disappear from both. Multi-day events continue to appear, just single all-day events don't. They appear properly in my other calendar apps (Business Calendar & Google Calendar).
Is this common behavior? I've set the events to be All Day because they should last All Day, not just until evening.
I finally had some time to sort this a bit.
Here are 2 pairs of screenshots:

I've blocked out event details, but hopefully it's still clear.
At 6:00pm, all-day events consistently disappear. The all-day event that still shows up on Jan 29 is a multi-day event, carrying over to Jan 30.
Possibly related: My timezone is UTC-6.
v1.8.11

Here are some more screenshots, from just before 6pm and just after 6pm.
I used Niagara, Google Calendar's widget, and Business Calendar's widget.
Google & BC both list all the events (even though they're truncated), but Niagara drops the two all-day events, keeping only timed events and multi-day events.
Thank you for your time on this! I'm really enjoying Niagara.
Reported by: @akorvemaker
I just ran into what I think is another way this issue presents itself. I'm at UTC+12, and some events show up on the day before they actually should. This is a pretty serious issue since it can mess with your planning unless you're double-checking things in the actual calendar. There is clearly some kind of timezone bug in the calendar widget.
Here's another way this issue presents itself: events that should show up on the next day actually show up above the weather display. Surely that isn't intended.
Thank you very much for reporting, Jan! Yep, this isn't intended; we'll try to fix the issue.