At the moment and if it is possible for you, only solution is to set UTC on server and Joomla/php.

Hi and thanks for taking a look at this.

Your last email correspondence to us a couple of weeks ago indicated that you planned to fix the problem in an upcoming version.

If that is going to take some time is there was a past version in which the calendar worked that we could maybe revert to? (other people's sites seem to be working so I am hoping that is the case)

Please let me know what you might suggest we do to get this working swiftly. We can also perhaps work to fix the calendar if you could point us in the right direction.

With many thanks

In case of a possible reversion, i´m interessed too, because it always worked fine until this upgrade ....