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Devices page "Last Offline" column shows UTC instead of local timezone

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#1,826 3 comments 0 reactions 0 assignees View on GitHub

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Assessment

Difficulty
2/5
Estimated time
1-3 hours
Newbie friendliness
64/100
Issue type
Bug
Clarity
Mostly clear
Activity status
Active
Tech stack
javascript
Domain
frontend

Research direction

Start at the Devices page and inspect how the “Last Offline” column formats timestamps, comparing it with the header clock or tile cards, which the report says show the correct local time. Reproduce by adding the column with a configured timezone such as Asia/Manila. Done means the column displays times in the configured local timezone rather than UTC.

Written by the indexing model from the issue text.

Description

bug 🐛 next release/in dev image 🚀
What installation are you running?

Production (netalertx) 📦

Is there an existing issue for this?
The issue occurs in the following browsers. Select at least 2.
  • Firefox
  • Chrome
  • Edge
  • Safari (unsupported) - PRs welcome
  • N/A - This is an issue with the backend
Current Behavior

The "Last Offline" column on the Devices page is showing times in UTC instead of my local timezone, so every flapping/offline device looks like it dropped 8 hours later than it actually did (I'm on UTC +8). Everything else on the page (the header clock, the tile cards) is correct, so it reads like the timestamps are just wrong.

Expected Behavior

All time are synchronized based on the timezone I set.

Steps To Reproduce
  1. Add the "Last Offline" column in the dashboard.
  2. It's time is showing in UTC and not on your local time.
Relevant app.conf settings
docker-compose.yml
services:
  netalertx:
    image: ghcr.io/netalertx/netalertx:latest
    container_name: netalertx
    network_mode: "host" # Required for device discovery
    restart: unless-stopped
    volumes:
      - ./data:/data
      - /etc/localtime:/etc/localtime:ro
    tmpfs:
      - /tmp:uid=20211,gid=20211,mode=1700
    environment:
      - PORT=20211
      - TZ=Asia/Manila # Change to your timezone
    cap_add:
      - NET_RAW
      - NET_ADMIN
Debug or Trace enabled
  • I have read and followed the steps in the wiki link above and provided the required debug logs and the log section covers the time when the issue occurs.
Relevant app.log section
  PASTE LOG HERE. Using the triple backticks preserves format.
Docker Logs
  PASTE DOCKER LOG HERE. Using the triple backticks preserves format.
Dominant language
Python
Stars
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Forks
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Avg merge
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Merged PRs (30d)
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