DST makes time line in calendar wrong, also breaks notifications

[apassy]

When the US switched to DST, time shifted forward (I live in UTC-6 - it became UTC-5). However, when lightbird is enabled, the timeline switches backward by one hour. (e.g. current clock time is 0900, "standard time" is 0800, time shown on timeline is 0700). When Lightbird is disabled, it works fine.

As noted, it's not just the timeline - it also breaks notifications.

[alice-mkh]

Hmm. What exactly timezone do you have selected in calendar settings? Maybe I can reproduce it by choosing it.

[alice-mkh]

Also, do you see this on SeaMonkey or Thunderbird, on what version, what Lightbird version do you have and what OS do you use?

[apassy]

Sorry, I should have know to give you this info. Windows 10, Pro. Tbird 38.6.0. Lightning 4.0.6. Lightbird 0.5.1

Windows set to "(UTC-6:00) Central Time" with "adjust for daylight saving time automatically" on.

Tbird set to "America/Chicago"

I also updated Tbird to 38.7.0 . Same result.

[alice-mkh]

Hmm. I see a different behavior. The system time is 10:45.
Both with and without Lightbird the timeline shows 11:45, and the notification triggers for events starting at 11:45 as well. I wonder how it may be different with and without Lightbird, since the latter doesn't change that. If only a recent Lightning change broke something.
Did you change any Lightning settings aside from timezone, and does the thing happen with local or remote calendars?

The test setup is same as yours aside that it's Windows XP (in VirtualBox) and Lightning version is 4.0.7.

[apassy]

I changed nothing except for time zone (then Tbird release).
It did seem odd to me that lightbird could change it.

I'll start disabling other extensions, and see what happens.
Give me a couple of hours.

A. Marc Passy
cell: 713/906-2888
fax: 713/489-3646
Gtalk: albertmpassy
http://www.linkedin.com/in/passy

4419 Woodvalley Dr
Houston, TX 77096

On Tue, Mar 15, 2016 at 11:51 AM, Exalm notifications@github.com wrote:

Hmm. I see a different behavior. The system time is 10:45.
Both with and without Lightbird the timeline shows 11:45, and the
notification triggers for events starting at 11:45 as well. I wonder how it
may be different with and without Lightbird, since the latter doesn't
change that. If only a recent Lightning change broke something.
Did you change any Lightning settings aside from timezone, and does the
thing happen with local or remote calendars?

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You are receiving this because you authored the thread.
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#27 (comment)

[Hb-]

Works for me. Enabling Lightbird has no negative effect on displaying the current time. The red line in day view and week view jumps in steps of 15 minutes. You may want to set Preferences - Calendar - Views - Show "2" hours at a time to get a better indication.

Windows 7 64 bit Pro, Seamonkey 2.40, Lightning 4.5b1 and our beloved Lightbird 0.5.1 here. Timezone Berlin.

[alice-mkh]

It is still relevant?

[apassy]

Still broken Current time = 1623.
[image: Inline image 1]

A. Marc Passy
cell: 713/906-2888
fax: 713/489-3646
Gtalk: albertmpassy
http://www.linkedin.com/in/passy

4419 Woodvalley Dr
Houston, TX 77096

On Wed, Jul 6, 2016 at 11:30 AM, Exalm notifications@github.com wrote:

It is still relevant?

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[alice-mkh]

I've checked again, it still works fine for me.

[mitar]

I also have this issue. I just noticed that after enabling this addon, in Thunderbird, just now, a line is around 12:40, but real local time is 13:40. I am in Pacific timezone (San Francisco).

[mitar]

Currently daylight saving time is not in effect though.

[alice-mkh]

Hmm. Does it matter which timezone you select?
Also, does it happen without Lightbird?

[mitar]

Correction. It seems this is some other issue. The line is just stuck at 12:30. It does not move. Even after restarting Thunderbird.

It does not happen without Lightbird.

[alice-mkh]

This one: #15? Feel free to reopen it.

[Hb-]

May only negative timezone offsets cause this error? Then it would not occur in the eastern hemisphere.

[alice-mkh]

The thing is that Lightbird doesn't do anything with time zones or the time line at all. All of that is provided by Lightning, so I really don't understand why it works there, but not here.

[mitar]

Now that I fixed other issues, I checked this again. My issue does not look like it is connected to DST. It just looks like red line is wrong, or stuck, or not updating. It looks simply not correct. I have not yet seen any pattern to it though, but it looks like it is always in the past. Few minutes or few hours.

[alice-mkh]

So it's probably #15 again.

[mitar]

Yes, I have calendar.view.timeIndicatorInterval set to 15 minutes, but delays are sometimes larger than an hour (currently it is around 9:20, but time is 11:13).

Maybe the line could be updated every time the window gets focus?

[mitar]

But I changed it to 5 and it jumped to the correct time.