Android bug report : CalendarContract Instance query result in today include all day event in yesterday.

gistfile1.txt

device : Nexus 5 4.4.3

I want events in one day. So I use CalendarContract Instance query with start to end time in today. Problem is yesterday all day event in result.

Uri.Builder builder = CalendarContract.Instances.CONTENT_URI.buildUpon();
ContentUris.appendId(builder, Today start time) 
ContentUris.appendId(builder, Today end time)

time log here.

Today start time : 06-13 01:51:31.628  D/TAG2 START﹕ Fri Jun 13 00:00:00 GMT+09:00 2014
Today end time : 06-13 01:51:31.628  D/TAG2 START﹕ Sat Jun 14 00:00:00 GMT+09:00 2014

But in result, all day event's start time log is

06-13 01:37:23.108 D/TAG2 START﹕ Thu Jun 12 09:00:00 GMT+09:00 2014
06-13 01:37:23.108 D/TAG2 END﹕ Fri Jun 13 09:00:00 GMT+09:00 2014

This event is all day event in yesterday!

I think this is probably CalendarContract Instance bug. I explain some guess.

1. CalendarContract Instance may be not support all day event. But it's bug.

2. CalendarContract Instance query need some thing timezone default. I guess all day event do not have time. So CalendarContract query method set time just created in default time(GMT+00:00). But I am in GMT+09:00. So all day event time is 9 to next day 9.