772023 - I entered five all-day appointments in Lightning but after closing and re-opening Thunderbird, three dates disappear and the calendar jumps to negative dates such as -23.Jan - -4.Jan -28163.

Status: RESOLVED DUPLICATE of bug 751821

(Calendar :: General, defect)

Description

[juergen.schulz]

Attachment: Screenshot of the calendar after re-opening Thunderbird

User Agent: Mozilla/5.0 (Windows NT 5.1; rv:12.0) Gecko/20100101 Firefox/12.0
Build ID: 20120420145725

Steps to reproduce:

I created a new calendar, which was meant to contain birthdays.
I entered five all-day appointments, which were shown correctly at the time of entry.
All appointments were set to repeat annually, and the reminder to either 7 or 14 days.
I am using the German version of Lightning.


Actual results:

When closing and re-opening Thunderbird, three of these five dates disappear and the calendar jumps to negative dates such as -23.Jan - -4.Jan -28163.
I repeated this behaviour about 10 times, tried also to not enter them manually but import them from a csv file saved a while ago with Sunbird, all leading to the same result.
Every time I deleted the entire calendar, created a new one, and started entering the appointments, always with the same result.


Expected results:

Well, the dates should be stored and re-loaded in the appropriate way...

Comment 2

[juergen.schulz]

I can confirm that with birthdays, I do enter the actual year of birth, and it seems to happen if the year is before 1970 (1970 not included).
I extracted all birthdays from an exported csv file, and tried to re-import them in a new list, and a few birthdays appeared corrupted. The same happened when I tried to enter them manually.
The original entries apparently survived the updates beyond Lightning 1.4 but cannot be entered or imported at a later time.
I turned Lightning off and went back to Sunbird 1.0b1, and it all works fine.  A pity anyway that Sunbird doesn't get maintained any more.  I preferred the stand-alone version of the calendar...