400282 - Events starting and/or ending during the extra hour on daylight saving time (DST) end day not shown or shown incorrectly in day and week view [summer time]

Status: NEW

(Calendar :: Calendar Frontend, defect)

Description

[Benjamin Kraus]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.7) Gecko/20070914 Firefox/2.0.0.7
Build Identifier: Lightning 0.7RC2 2007101603

An event occurring from 1:00am EDT to 1:00am EST on November 4, 2007 (the date of the switch from Eastern Daylight Time to Eastern Standard Time in Eastern United States) does not appear in day or week view.

Reproducible: Always

Steps to Reproduce:
1. Set time zone to "America/New_York"
2. Import the attached .ics file with events occurring on Nov. 4, 2007
3. Look at the "Day" or "Week" view on Nov. 4, 2007

Actual Results:  
An event occurring from 1:00am EDT to 1:00am EST on November 4, 2007 does not appear in day or week view.

Expected Results:  
An event occurring from 1:00am EDT to 1:00am EST on November 4, 2007 should appear as lasting one hour long, or should at least show up on the day and week view.

One of the events included in the .ics file starts at 1:00am EDT and ends at 1:00am EST, lasting exactly one hour. However, due to the daylight time "fall-back", the event is not shown in either the day or week view (most likely because it is considered to have duration 0 hours).

Similarly an event starting at 1:30am EDT and ending at 1:30am EST is not shown.

An event starting at 1:45am EDT and ending at 1:15am EST shows up as a thin bar.

An event starting at 1:00am EST and ending at 1:59am EST is shown in the 2:00am-3:00am slot (one hour later than is correct), overlapping with another event.

Comment 1

[Benjamin Kraus]

Attachment: Events occuring on Nov. 4, 2007 and March 9, 2008 around the start and end of daylight saving time.

Comment 2

[Benjamin Kraus]

Attachment: Events occuring on Nov. 4, 2007 as shown in America/New_York time zone.

Comment 3

[Benjamin Kraus]

Attachment: Events occuring on Nov. 4, 2007 as shown in Europe/London time zone.

Comment 4

[Omar Bajraszewski]

I can confirm it with lightning 0.7 RC2. I also noticed that 3rd of Nov is bold in mini calendar (and there's no event for 3rd of Nov)

Comment 5

[Benjamin Kraus]

I also noticed that Nov. 3 and March 8 are bold in the mini calendar, despite no tasks being on either of those days. If you get rid of the events on Nov. 4 and March 9 (respectively) the bold goes away.