Outlook DST (Daylight Saving Time) problem

Status
Not open for further replies.

LaleX

Member
Outlook version
Outlook 2010 32 bit
Email Account
Hi,

I'm trying to create a meeting event on outlook (using an outlook.com account) through a third party application we're developing. Everything works as expected, except when the "Daylight Saving Time" is effective. In this scenario, when the meeting organizer or invitees receives the e-mail with the invitation, initially the start time and end time show up correctly... but if I send another invitation or wait for few moments, the former invitation start time jumps one hour.

Example:

If the meeting start date is 8:00AM, it becomes 9:00AM.

The meeting ics contains the following "DAYLIGHT" property:

BEGIN:DAYLIGHT

DTSTART:16011020T235959

RRULE:FREQ=YEARLY;BYDAY=3SA;BYMONTH=10

TZOFFSETFROM:-0300

TZOFFSETTO:-0200

END:DAYLIGHT

I compared the ICS files that the outlook stores: the file content before the "one hour jump", and the file content after, and some properties were changed. The following are relevant data that was changed (presumably by Exchange Server):

TZID went from "America/Sao_Paulo" to "SA Eastern Standard Time" (the former is the correct one)

TZOFFSETFROM went from "-0200" to "-3000"

TZOFFSETTO went from "-0200" to "-3000"

We also tried the same thing using a Gmail account (through the Outlook 2010 client) and it behaves correctly. Therefore, i'm suspecting of something related to Exchange Server which might be changing the event.

PS: This issue was verified on Outlook 2007 and 2010 (although I doubt it has any influence whatsoever on this issue).

I appreciate any light on this matter.

Alex
 
Status
Not open for further replies.
Similar threads
Thread starter Title Forum Replies Date
D Outlook.com premium finally dying... what do I do with my domain? Using Outlook.com accounts in Outlook 1
witzker Outlook 2019 is cutting Picture Extension *.pn_ Using Outlook 3
S Is there a free version of outlook? Using Outlook 0
peterbata Shared Tasks Outlook for Mac Using Outlook 2
L Ideas for Setup with New Office 365 Family Subscription (Outlook) Using Outlook.com accounts in Outlook 3
M Issue transferring Outlook 2016 email accounts & settings onto new computer Using Outlook 8
S Excel vba code to manage outlook web app Using Outlook 8
J outlook 2007 doesn't let me choose which .pst to search Using Outlook 1
H Custom Outlook Contact Form VBA Outlook VBA and Custom Forms 1
P Outlook 2013 Calendar Archiving Using Outlook 0
D Connecting Gmail to Outlook 365 - My Setup not working Using Outlook 1
K Outlook tasks formatting Using Outlook 4
G Retention Policy for Outlook.com Deleted Items folder Using Outlook 0
S Problem Checking the available stores in my Inbox (Outlook VBA) Outlook VBA and Custom Forms 0
V Is it possible to collect statistics from Outlook forms? Outlook VBA and Custom Forms 1
Z Outlook 365 delete reminder you can’t make change to contents of this-read only folder Using Outlook 4
H I have no profile listed for Outlook! Using Outlook 9
S Outlook VBA How to adapt this code for using in a different Mail Inbox Outlook VBA and Custom Forms 0
S Macro for Loop through outlook unread emails Outlook VBA and Custom Forms 2
D Outlook 2016 how to use gmail account as source account for outlook 365 Using Outlook 9
Horsepower Contacts added from iPhone don't show up in Outlook Using Outlook 1
F Microsoft Outlook Connector 14.0.6123.5001 - Help! Using Outlook 6
A Outlook (and Office) 2019 Logging Using Outlook 2
glnz Can Word Normal.dotm interfere with Outlook? Office 2016 Using Outlook 5
D Outlook 2016 and Earlier with Office365 in 2021 Using Outlook 3
glnz Moving from Outlook 2003 to MS365 Outlook - need basics Using Outlook 4
L Outlook saved template function too limited Using Outlook 2
C Looking for feedback on new Outlook Add-in Using Outlook 0
M Outlook on 3 Computers Shows Different Total Items on Same Account Using Outlook 3
S Outlook email to configure setup for each mail Outlook VBA and Custom Forms 1
witzker print-list-of-outlook-folders with sort posibility Outlook VBA and Custom Forms 7
witzker Open Contact missing in Outlook 2019 Using Outlook 2
D.Moore VB script to Digitaly Sign newly created outlook message Outlook VBA and Custom Forms 2
B Outlook 2016 Retail C2R keeps logging since update? Using Outlook 0
M outlook 365 trying to finish my sentences Using Outlook 0
D Outlook Address Book Using Outlook 0
B Emails get stuck in Outbox of Gmail IMAP in Outlook for Windows Using Outlook 0
C Not sync folders not found after MS Outlook 365 update Using Outlook 1
V Outlook 2016 Does Outlook-2016 (64 bit) work with iCloud for Windows ? Using Outlook 5
R Microsoft Outlook 2016 - Gmail not sending, asks for password for SMTP, tried different ports Using Outlook 23
V Outlook 2016 Outlook-2016 and iCloud for Windows - Problems Using Outlook 9
O VBA Outlook Message Attachment - Array Index Out of Bounds Outlook VBA and Custom Forms 0
K Imap PC Outlook + Android phone Using Outlook 1
GregS Outlook 2016 Move Outlook to new computer? Using Outlook 4
I Outlook 2003 shows html code when To: field is empty Using Outlook 7
O The Outlook API wrongfully shows an outlook folder to have zero sub-folders Outlook VBA and Custom Forms 1
O The Outlook API wrongfully shows an outlook folder to have zero sub-folders Outlook VBA and Custom Forms 2
C All Gmails don't show in Outlook 2019 Using Outlook 2
D Outlook 2007 vs. Outlook 2010 -- ToDo Bar Using Outlook 0
U Outlook 2016 Outlook 2016 sender name Using Outlook 1

Similar threads

Top