Configure the default timezone

Check all the available timezones by executing these commands:

$ cd /opt/bitnami/apps/redmine/htdocs/
$ bundle exec rake time:zones:all

Once you decide on the correct one, edit the file /opt/bitnami/apps/redmine/htdocs/config/application.rb and substitute the line

config.active_record.default_timezone = :local

with

config.active_record.default_timezone = 'your_timezone'

Note that the single quotes around the timezone value are necessary.

Restart services.

$ sudo /opt/bitnami/ctlscript.sh restart apache