Hi,
Following is the timezone setting documentation for Logstash Date filter.
What is meant by platform default in the description? Does it mean the timezone of the server on which the Logstash is running?
Timezone
Value type is string
There is no default value for this setting.
Specify a time zone canonical ID to be used for date parsing.
The valid IDs are listed on the (Joda.org available time
zones page)[http://joda-time.sourceforge.net/timezones.html].
This is useful in case the time zone cannot be extracted
from the value, and is not the platform default. If this is not
specified the platform default will be used. Canonical ID is
good as it takes care of daylight saving time for you.
For example, America/Los_Angeles or Europe/France are valid IDs.