occurrence_timestamp_in_utc

allows working with recurring events independently of time zones

boolean occurrence_timestamp_in_utc;

scheduler.config.occurrence_timestamp_in_utc = true;
...
scheduler.init('scheduler_here',new Date(2013,05,11),"week");

Required extension: ext/dhtmlxscheduler_recurring.js

false

Details

Watch out! The option is intended for 'newborn' schedulers and won't affect the already running ones.