Timezone mismatch: scheduler/UI uses UTC despite TZ=Europe/Madrid #80

Is there an existing issue for this?

• I have searched the existing issues

Current Behavior

I'm running the latest LinuxServer Speedtest Tracker container.
The container is configured with:
environment:

• TZ=Europe/Madrid
• SPEEDTEST_SCHEDULE=33 10 * * *

The container itself uses the correct timezone:
$ docker exec speedtest date
Tue Jul 21 10:47:48 CEST 2026
$ docker exec speedtest printenv TZ
Europe/Madrid

However, Laravel reports:
$ docker exec speedtest php /app/www/artisan about
Timezone ................................ UTC

Also noticed that:

• A manual speedtest executed at 09:00 is shown in the dashboard as having run at 07:00.
• Scheduled tests appear to follow UTC rather than the configured local timezone.

It looks like the application is using UTC internally despite the container being configured with TZ=Europe/Madrid

artisan about reports: Timezone UTC
while: TZ=Europe/Madrid

and the container system time is correct (date shows CEST).
Is this expected behaviour, or is there a missing configuration to make Laravel use the container timezone?

Expected Behavior

The application should use the configured container timezone (Europe/Madrid) consistently for:

• scheduled tests
• displayed execution times
• next scheduled run

Steps To Reproduce

1. Deploy the latest lscr.io/linuxserver/speedtest-tracker:latest image.

2. Configure the container with:

   • TZ=Europe/Madrid
   • SPEEDTEST_SCHEDULE=33 10 * * *

3. Start the container.

4. Run:

bash
docker exec speedtest php /app/www/artisan about
The output reports:
Timezone: UTC

5. Execute a manual speedtest from the web UI.

6. The dashboard shows the manual test two hours earlier than the actual execution time (e.g. a test started at 09:00 is displayed as 07:00).

7. The next scheduled run is also inconsistent with the configured timezone.

Environment

* Image: lscr.io/linuxserver/speedtest-tracker:latest
* LinuxServer version: v1.14.5-ls162
* Speedtest Tracker: v1.14.5
* Laravel: 13.16.1
* PHP: 8.5.8

CPU architecture

x86-64

Docker creation

version: '3.4'
services:
    speedtest-tracker:
        container_name: speedtest
        ports:
            - 8081:80
            - 8448:443
        environment:
            - PUID=1000
            - PGID=1000
            - DB_CONNECTION=sqlite
            - TZ=Europe/Madrid
            - APP_KEY=base64:dsSFgrWEG$
            - APP_NAME=Speedtest Tracker
            - PUBLIC_DASHBOARD=false
            - AUTH=True
            - SPEEDTEST_SCHEDULE=33 10 * * */1
        volumes:
            - /home/docker/speedtest:/config
        image: lscr.io/linuxserver/speedtest-tracker:latest
        restart: unless-stopped

Container logs

Container logs do not show any useful information related to the issue.

The only output is the LinuxServer startup log plus occasional debug entries such as:
[2026-07-21 00:09:03] production.DEBUG: Pinged hostname {“host”:“icanhazip.com”, …}

There are no warnings or errors related to timezone handling or scheduling.