Events > Settings > Formatting > Date/Time > Use 24h Format? is only used when Creating events, not when displaying events. To change the time format for display, use Events > Settings > Formatting > Date/Time > Time Format. You should change it from “g:i a” to “G:i”. The formats are documented here: https://wordpress.org/documentation/article/customize-date-and-time-format/
This reply was modified 2 months, 3 weeks ago by joneiseman.
Thank you very much for your suggestion. I checked my settings and this fields was set in “H:i”. I have change it to “G:i”, but it didn’t solve the issue.
However I paid more attention in this page settings and when I was looking for all the fields that are with Time Format I found in Calendar > Event format > #_12HSTARTTIME – #_EVENTLINK. Changing to #_24HSTARTTIME – #_EVENTLINK solve the issue. Thank you!