Numeric Clock (GNOME Shell Extension)

A lightweight GNOME Shell extension that replaces the top-bar clock with a numeric, fully configurable format (e.g., DD/MM/YYYY HH:MM). Works on GNOME 42 → 45+ (Wayland & Xorg). Licensed under MIT.

UUID: numeric-clock@nickotmazgin E.G.O. page: https://extensions.gnome.org/extension/8566/numeric-clock/

Using GNOME 42–44? See the legacy/42-44 branch.

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Quick links

• Install on GNOME Extensions (E.G.O.): https://extensions.gnome.org/extension/8566/numeric-clock/
• Latest GitHub Release (ZIPs): https://github.com/nickotmazgin/Linux-Numeric-Date-And-Clock/releases/latest
• Issues: https://github.com/nickotmazgin/Linux-Numeric-Date-And-Clock/issues
• Discussions: https://github.com/nickotmazgin/Linux-Numeric-Date-And-Clock/discussions

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Screenshot

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Features

• Fully numeric date/time (you choose the strftime format string).
• Instant-apply preferences — changes apply as you type.
• Configurable update interval (seconds).
• Plays nice with other clocks (keeps visible labels in sync).
• Safe text rendering (plain text; no Pango markup).
• No network access, telemetry, or external services.

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Compatibility & builds

Build (branch)	GNOME	Settings schema ID	E.G.O “Extension version”	Packaging notes
Main (main)	45+	org.gnome.shell.extensions.numeric-clock	v7	Do not include schemas/gschemas.compiled. Metadata includes "icon": "icon.png".
Legacy (legacy/42-44)	42–44	org.gnome.shell.extensions.numeric-clock	v12	Must include schemas/gschemas.compiled inside the ZIP.

On the E.G.O. page you can pick Shell version (42/43/44/45) and the matching Extension version (v12 for 42–44, v7 for 45+) from the dropdowns.

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Install

A) From extensions.gnome.org (recommended)

1. Open https://extensions.gnome.org/extension/8566/numeric-clock/

2. In Download, set Shell version to your GNOME, then choose:

   • GNOME 45+ → Extension version v7
   • GNOME 42–44 → Extension version v12

3. Click Install (with the browser integration), or download and install manually:

B) Manual install (ZIP)

# 45+
gnome-extensions install --force numeric-clock@nickotmazgin-gnome45-*.zip

# 42–44 (legacy)
gnome-extensions install --force numeric-clock@nickotmazgin-legacy-42-44-*.zip

# Enable + open preferences
gnome-extensions enable numeric-clock@nickotmazgin
gnome-extensions prefs  numeric-clock@nickotmazgin

Note: 45+ ZIPs must not contain schemas/gschemas.compiled. 42–44 ZIPs must contain schemas/gschemas.compiled.

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Usage

Open Preferences and set:

• Format string — any strftime pattern.
• Update interval (seconds) — how often to refresh.

Changes apply immediately as you type.

Quick strftime cheatsheet

%A weekday • %a short weekday • %d day • %m month • %Y year • %H hour (00–23) • %M minute • %S second

Examples:

• %A %d/%m/%Y %H:%M → Sunday 24/08/2025 22:04
• %Y-%m-%d %H:%M:%S → 2025-08-24 22:04:09
• %d.%m.%Y %H:%M → 24.08.2025 22:04

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Troubleshooting

Clock missing or doubled?

• List clock-like extensions and disable the extra one:

  gnome-extensions list | grep -Ei 'clock|date|time'
  gnome-extensions disable <conflicting-extension-uuid>

• If the panel label doesn’t refresh:

  • Make sure your Update interval is > 0.
  • On Xorg you can press Alt+F2, type r, Enter (restart shell). On Wayland, log out and back in.

Reset preferences (45+ schema):

gsettings reset-recursively org.gnome.shell.extensions.numeric-clock

Check what’s installed / enabled:

gnome-extensions info numeric-clock@nickotmazgin
gnome-extensions list --enabled

Logs:

journalctl --user -b 0 -o cat | grep -i numeric-clock

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Packaging & releases (for maintainers)

E.G.O. reads the integer "version" in metadata.json:

• 45+ build → "version": 7
• 42–44 build → "version": 12

Common metadata fields:

{
  "uuid": "numeric-clock@nickotmazgin",
  "name": "Numeric Clock",
  "description": "Top-bar clock with a numeric format (DD/MM/YYYY 24-hour).",
  "settings-schema": "org.gnome.shell.extensions.numeric-clock",
  "url": "https://github.com/nickotmazgin/Linux-Numeric-Date-And-Clock"
}

45+ build (from main):

cd numeric-clock@nickotmazgin
rm -f schemas/gschemas.compiled                  # must NOT ship on 45+
# ensure metadata has "icon": "icon.png"
gnome-extensions pack . --force --out-dir ..
# -> ../numeric-clock@nickotmazgin.shell-extension.zip

Legacy 42–44 build (from legacy/42-44):

cd numeric-clock@nickotmazgin
glib-compile-schemas schemas                     # produce schemas/gschemas.compiled
gnome-extensions pack . --force --out-dir ..
# -> ../numeric-clock@nickotmazgin.shell-extension.zip

Release flow

1. Upload the appropriate ZIP(s) to GitHub Releases.
2. On E.G.O., submit the 45+ update (v7) and keep legacy v12 available via the dropdowns.

Do not commit schemas/gschemas.compiled to the repo; it’s a build artifact (only inside the legacy ZIP).

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Privacy

No network access. Only local preferences are stored.

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License

MIT © Nick Otmazgin — see LICENSE.

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Support

If you enjoy the extension and want to support development: PayPal: https://www.paypal.com/paypalme/nickotmazgin

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Contact

nickotmazgin.dev@gmail.com

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