Hi sir:

When we create a new event to iso smartphone, but we found when the smartphone auto sync event to web Calendar, the web Calendar show the wrong date. It has one hour different about smartphone and web Calendar. You can check the attached file.

We found about timezone of the smartphone create the event(attached file: 20150910T07-ios-update.ics) differs from the web Calendar create the event(attached file: 20150910T07-ios-smartphone.ics). There is the different about the timezone, other information is the same. But the result(attached file: sogo-ios-timezone-result.png) is different, please check the red circle part.
And the smartphone show the startdate is 7:00 AM, but the web Calendar is 6:00 AM.

The timezone of the smartphone create it below as:
BEGIN:VTIMEZONE
TZID:Asia/Taipei
BEGIN:STANDARD
DTSTART:19450921T010000
RDATE:19450921T010000
RDATE:19461001T000000
RDATE:19471101T000000
RDATE:19481001T000000
RDATE:19491001T000000
RDATE:19501001T000000
RDATE:19511001T000000
RDATE:19521101T000000
RDATE:19531101T000000
RDATE:19541101T000000
RDATE:19551001T000000
RDATE:19561001T000000
RDATE:19571001T000000
RDATE:19581001T000000
RDATE:19591001T000000
RDATE:19601001T000000
RDATE:19611001T000000
RDATE:19741001T000000
RDATE:19751001T000000
RDATE:19791001T000000
TZNAME:GMT+8
TZOFFSETFROM:+0900
TZOFFSETTO:+0800
END:STANDARD
BEGIN:DAYLIGHT
DTSTART:19460515T000000
RDATE:19460515T000000
RDATE:19470415T000000
RDATE:19480501T000000
RDATE:19490501T000000
RDATE:19500501T000000
RDATE:19510501T000000
RDATE:19520301T000000
RDATE:19530401T000000
RDATE:19540401T000000
RDATE:19550401T000000
RDATE:19560401T000000
RDATE:19570401T000000
RDATE:19580401T000000
RDATE:19590401T000000
RDATE:19600601T000000
RDATE:19610601T000000
RDATE:19740401T000000
RDATE:19750401T000000
RDATE:19790701T000000
TZNAME:GMT+8
TZOFFSETFROM:+0800
TZOFFSETTO:+0900
END:DAYLIGHT
END:VTIMEZONE

Please help me to solve this question. Thanks a lot.