Visiting different time zones

[Guest nuttyphilt]

My M3100 has a nice feature when visiting different time zones - you can select a 'visiting time zone' and it will update all your appointments to reflect the new time zone accordingly.

However, my C600 doesn't seem to have anything similar, e.g. I'm going to Florida on Monday so need to put everything back 5 hours. However if I change the Time Zone on the phone it doesn't change the appointments. i.e. my 9 am UK appointments stay at 9 am, instead of now showing at 4 am local time.

Any suggestions how to get round this?