How to Display the Time in 24-hour Format
Any Anuko clock can be configured to display time in a custom format including military. To make things more convenient, we provide a mechanism for individual selection of time and date formats for each clock. This enables you, for example, to display local time in 12-hour am/pm format and GMT time in 24-hour military format.
You can select a desired time format on the "Time and date display options" page in Anuko World Clock
Preferences. The format you need is either "24 hours", "HH:mm:ss" or "HH:mm". You can also type in your own time format if a list of pre-defined time formats does not provide the one you need.

"Time and date display options" page in Preferences

Built-in time formats in World Clock
Note: you can type your own time format into the
Time box if none of the built-in formats suits you.
World Clock FAQ