### Steps to reproduce
1.Create calendar entry
2.Choose start time
3.Incorrec…t time format
### Expected behavior
I expect a correct representation of the 24-hour time format.
### Actual behaviour
I've encountered an issue where the times in the calendar are displayed in 12-hour format, despite setting the timezone to Germany. I've tried it on several Nextcloud instances, and the issue persists across all of them. The old trick of changing the region to Swiss German doesn't work anymore with Calendar version 5.0.
### Calendar app version
5.0
### CalDAV-clients used
_No response_
### Browser
Firefox, google chrome
### Client operating system
Windows 10
### Server operating system
debian 12
### Web server
Nginx
### Database engine version
MariaDB
### PHP engine version
Other
### Nextcloud version
30.0.0
### Updated from an older installed version or fresh install
Updated from an older version
### List of activated apps
```Text
Enabled:
- activity: 3.0.0
- analytics: 5.0.1
- announcementcenter: 7.0.0
- appointments: 2.1.10
- bruteforcesettings: 3.0.0
- calendar: 5.0.0
- call_summary_bot: 2.0.0
- cloud_federation_api: 1.13.0
- comments: 1.20.1
- contacts: 6.1.0
- contactsinteraction: 1.11.0
- dashboard: 7.10.0
- dav: 1.31.1
- deck: 1.14.0
- federatedfilesharing: 1.20.0
- federation: 1.20.0
- files: 2.2.0
- files_accesscontrol: 1.20.1
- files_antivirus: 5.5.7
- files_downloadlimit: 3.0.0
- files_pdfviewer: 3.0.0
- files_reminders: 1.3.0
- files_sharing: 1.22.0
- files_trashbin: 1.20.1
- files_versions: 1.23.0
- firstrunwizard: 3.0.0
- forms: 4.2.4
- group_default_quota: 0.1.10
- groupfolders: 18.0.1
- logreader: 3.0.0
- lookup_server_connector: 1.18.0
- nextcloud_announcements: 2.0.0
- notes: 4.11.0
- notifications: 3.0.0
- oauth2: 1.18.1
- onlyoffice: 9.3.0
- password_policy: 2.0.0
- photos: 3.0.2
- polls: 7.2.3
- privacy: 2.0.0
- provisioning_api: 1.20.0
- recommendations: 3.0.0
- related_resources: 1.5.0
- serverinfo: 2.0.0
- settings: 1.13.0
- sharebymail: 1.20.0
- spreed: 20.0.0
- support: 2.0.0
- survey_client: 2.0.0
- systemtags: 1.20.0
- tables: 0.8.0
- text: 4.1.0
- theming: 2.5.0
- twofactor_backupcodes: 1.19.0
- updatenotification: 1.20.0
- user_status: 1.10.0
- viewer: 3.0.0
- weather_status: 1.10.0
- webhook_listeners: 1.1.0-dev
- workflowengine: 2.12.0
Disabled:
- admin_audit: 1.20.0
- circles: 30.0.0-dev (installed 25.0.0)
- encryption: 2.18.0
- files_external: 1.22.0 (installed 1.19.0)
- files_mindmap: 0.0.30 (installed 0.0.30)
- suspicious_login: 8.0.0
- twofactor_nextcloud_notification: 4.0.0
- twofactor_totp: 12.0.0-dev
- user_ldap: 1.21.0
```
### Nextcloud configuration
```Text
{
"system": {
"passwordsalt": "***REMOVED SENSITIVE VALUE***",
"secret": "***REMOVED SENSITIVE VALUE***",
"trusted_domains": [
"localhost",
"***REMOVED SENSITIVE VALUE***"
],
"datadirectory": "***REMOVED SENSITIVE VALUE***",
"dbtype": "mysql",
"version": "30.0.0.14",
"overwrite.cli.url": "***REMOVED SENSITIVE VALUE***",
"dbname": "***REMOVED SENSITIVE VALUE***",
"dbhost": "***REMOVED SENSITIVE VALUE***",
"dbport": "3306",
"dbtableprefix": "oc_",
"mysql.utf8mb4": true,
"dbuser": "***REMOVED SENSITIVE VALUE***",
"dbpassword": "***REMOVED SENSITIVE VALUE***",
"installed": true,
"instanceid": "***REMOVED SENSITIVE VALUE***",
"default_phone_region": "de",
"default_language": "de_DE",
"default_locale": "de_DE",
"memcache.distributed": "\\OC\\Memcache\\Redis",
"memcache.local": "\\OC\\Memcache\\Redis",
"memcache.locking": "\\OC\\Memcache\\Redis",
"redis": {
"host": "***REMOVED SENSITIVE VALUE***",
"port": 6379
},
"mail_smtpmode": "smtp",
"mail_sendmailmode": "smtp",
"mail_from_address": "***REMOVED SENSITIVE VALUE***",
"mail_domain": "***REMOVED SENSITIVE VALUE***",
"mail_smtpauthtype": "LOGIN",
"mail_smtpauth": 1,
"mail_smtphost": "***REMOVED SENSITIVE VALUE***",
"mail_smtpport": "465",
"mail_smtpname": "***REMOVED SENSITIVE VALUE***",
"mail_smtppassword": "***REMOVED SENSITIVE VALUE***",
"maintenance": false,
"mail_smtpstreamoptions": {
"ssl": {
"allow_self_signed": true,
"verify_peer": false,
"verify_peer_name": false
}
},
"app_install_overwrite": [
"hancomoffice",
"occweb",
"deck",
"shifts",
"mindmap_app",
"backup",
"files_mindmap",
"onlyoffice",
"forms",
"appointments",
"files_antivirus"
],
"theme": "",
"loglevel": 2,
"mail_smtpsecure": "ssl",
"updater.release.channel": "stable",
"maintenance_window_start": "17",
"integrity.check.disabled": false,
"defaultapp": ""
}
}
```
### Web server error log
```Text
inconspicuous
```
### Log file
```Text
inconspicuous
```
### Browser log
```Text
inconspicuous
```
### Additional info
_No response_