Hi Luca! What timezone is your Windows Server configured for, and what timezone is configured in your user account settings in webmail? I did a quick test on this from a virtual machine here thinking it might be the date format, but was not able to reproduce in-house. Thanks in advance :) 

We are having the same problem with build 8223. In our case it is one day back in case of an all day appointment. Timezone in our case is UTC+1 (currently with CEST it is UTC+2).

Hi Christian, 

I was able to replicate a similar issue. In my testing so far, it appears to only occur with UTC and UTC+ timezones. When clicking on the Week/Day view > All Day section, the popout window's start/end dates not match the day that was clicked. 

Can you confirm the same issue? 

If what you're seeing is different, can you please provide the steps you're taking to create the appointment? 

Thank you,

Hi Andrea and Kyle, our timezone is UTC +01 (server and webmail) and the problem is the same replicate by Andrea, but also when i transform an hourly appointment into a daily appointment

I try with UTC-01 and the problem disappears!

Thanks everyone! We'll get this going in the right direction.

same issue here (in Italy we use CET that is UTC+1)

After seeing this thread I went ahead and gave it a try.

Same issue 

If I remember correctly we already had a bunch of tickets and community posts for this before and at some point it seemed resolved.

It is now back :(

Edit: Seems the issue exists in both Week and Day view of the calendar, when you click on the "whole day" cell to create a new all day appointment.

Same here: Germany (UTC+01:00): an all-day-appointment is moving one day prior on each edit/save process :-( so right now it is almost "useless" and will create really a mess and frustration.at our employees.
Checked this by eMClient/EWS: and iPhone/EAS: did not notice this behavior with these protocols - right now better do not use webmail for managing/creating/editing calendar-entries :-( Custom build with a fix would be great.

Damn, it is indeed even worse that I thought orignally.

Any all day appointment created/edited from webmail shift a day back at creation and at every modification of the event.

We already have complaints from customers claiming their calendar is a mess and willing to sue us beacuse they lost business due to incorrect rendez-vous dates. It's a _huge_ fail.

We'll work on getting you all an update on this one as soon as possible. Please standby.

TY

I just wanted to give you all a quick update on this one. We have made some progress on this and have resolved the areas noted with some success. We did identify some related problem areas we need to also address and obviously would like to get these changes tested thoroughly, so unfortunately I don't have an ETA available at this time. We are moving forward though!

Hi everyone, 

I wanted to let you know that Build 8250 has been released and addresses a number of calendar issues, including all day appointments not being saved on the correct day. Please find the download link and release notes here: 

SmarterMail Downloads

We truly appreciate your patience while we worked through this and thank you for helping us to improve SmarterMail. 

Kind regards,