6 calls to event_is_dst() in Event 5.2

event_check_dst in ./event.module

Get DST and TZ induced offset of event

event_cron in ./event.module

Implementation of hook_cron

event_dst in ./event.module

Display a page with the timezone and daylight savings time regions.

event_nodeapi in ./event.module

hook_nodeapi implementation

event_update_5 in ./event.install

Set DST

event_zonelist in ./event.module

Returns an array of timezones, either keyed by the zones's numeric ID or by a composite key of ID and offset in seconds.