Official agent skill

Dotnet Timezone

.NET timezone handling guidance for C applications. An agent skill from github/awesome-copilot.

OfficialMITAuto-check passed

Install Dotnet Timezone

skills CLI

$ npx skills add github/awesome-copilot --skill dotnet-timezone -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI

$ gh skill install github/awesome-copilot dotnet-timezone --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy

$ git clone --depth 1 https://github.com/github/awesome-copilot.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/dotnet-timezone .claude/skills/dotnet-timezone && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Paste into Claude Code

Install the "dotnet-timezone" agent skill from https://github.com/github/awesome-copilot/tree/main/skills/dotnet-timezone into .claude/skills/dotnet-timezone/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "dotnet-timezone", then confirm the skill loads.

Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

$skill-installer

$skill-installer install https://github.com/github/awesome-copilot/tree/main/skills/dotnet-timezone

Type this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.

skills CLI

$ npx skills add github/awesome-copilot --skill dotnet-timezone -a codex

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install github/awesome-copilot dotnet-timezone --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/github/awesome-copilot.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/dotnet-timezone .agents/skills/dotnet-timezone && rm -rf skills-src

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "dotnet-timezone" agent skill from https://github.com/github/awesome-copilot/tree/main/skills/dotnet-timezone into .agents/skills/dotnet-timezone/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "dotnet-timezone", then confirm the skill loads.

Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add github/awesome-copilot --skill dotnet-timezone -a cursor

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install github/awesome-copilot dotnet-timezone --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/github/awesome-copilot.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/dotnet-timezone .cursor/skills/dotnet-timezone && rm -rf skills-src

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "dotnet-timezone" agent skill from https://github.com/github/awesome-copilot/tree/main/skills/dotnet-timezone into .cursor/skills/dotnet-timezone/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "dotnet-timezone", then confirm the skill loads.

Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

gemini skills install

$ gemini skills install https://github.com/github/awesome-copilot.git --path skills/dotnet-timezone

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

$ npx skills add github/awesome-copilot --skill dotnet-timezone -a gemini-cli

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install github/awesome-copilot dotnet-timezone --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/github/awesome-copilot.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/dotnet-timezone .gemini/skills/dotnet-timezone && rm -rf skills-src

Use ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.

Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/

Paste into Gemini CLI

Install the "dotnet-timezone" agent skill from https://github.com/github/awesome-copilot/tree/main/skills/dotnet-timezone into .gemini/skills/dotnet-timezone/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "dotnet-timezone", then confirm the skill loads.

Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

GitHub CLI

$ gh skill install github/awesome-copilot dotnet-timezone

Installs for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).

skills CLI

$ npx skills add github/awesome-copilot --skill dotnet-timezone -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

$ git clone --depth 1 https://github.com/github/awesome-copilot.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/dotnet-timezone .github/skills/dotnet-timezone && rm -rf skills-src

Use ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.

GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/

Paste into GitHub Copilot

Install the "dotnet-timezone" agent skill from https://github.com/github/awesome-copilot/tree/main/skills/dotnet-timezone into .github/skills/dotnet-timezone/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "dotnet-timezone", then confirm the skill loads.

GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add github/awesome-copilot --skill dotnet-timezone -a opencode

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install github/awesome-copilot dotnet-timezone --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/github/awesome-copilot.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/dotnet-timezone .opencode/skills/dotnet-timezone && rm -rf skills-src

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "dotnet-timezone" agent skill from https://github.com/github/awesome-copilot/tree/main/skills/dotnet-timezone into .opencode/skills/dotnet-timezone/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "dotnet-timezone", then confirm the skill loads.

OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

Facts

Skill name: dotnet-timezone
GitHub stars: 40k
Used in: 1 other repo
Token cost: ~976 tokens
SKILL.md length: 423 words
Files: 3 (incl. references)
Skills in repo: 417
Repo updated: Oct 7, 2026
First seen: Oct 7, 2026
Licence: MIT

At a glance

.NET timezone handling guidance for C applications. An agent skill from github/awesome-copilot.

Works in 4 steps: Extract each location from the input. → Read references/timezone-index.md for… → If the exact location is not listed,… → …
Working with TimeZoneInfo
SKILL.md covers Start With The Right Path, Resolve Addresses And Locations, Look Up Timezone IDs and Generate Code, plus 3 more sections
Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Dotnet Timezone is an agent skill from github/awesome-copilot, published by the product's own GitHub organization. .NET timezone handling guidance for C applications. Use when working with TimeZoneInfo, DateTimeOffset, NodaTime, UTC conversion, daylight saving time, scheduling across timezones, cross-platform Windows/IANA timezone IDs, or when a .NET user needs the timezone for a city, address, region, or country and copy-paste-ready C code.

Its SKILL.md is about 980 tokens, which your agent loads only when the skill is triggered. The skill folder holds 3 other files, including reference files (for example `references/code-patterns.md` and `references/timezone-index.md`).

It works with .NET and C#. The repository describes itself as: Community-contributed instructions, agents, skills, and configurations to help you make the most of GitHub Copilot. The licence is MIT.

When your agent uses it

Working with TimeZoneInfo
Daylight saving time
Scheduling across timezones
Cross-platform Windows/IANA timezone IDs

Example prompts

“/dotnet-timezone”

Workflow steps

4 steps, taken from the first numbered list in SKILL.md.

Extract each location from the input.
Read references/timezone-index.md for common Windows and IANA mappings.
If the exact location is not listed, infer the correct IANA zone from geography, then map it to the Windows ID.
Return both IDs and a ready-to-use C# example.

What it can do on your machine

Read from SKILL.md and the folder at commit 727ff2e. It shows what the files ask for, not the result of running them.

Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md (its code samples are csharp).
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Dotnet Timezone loads about 976 tokens when it runs, and up to ~3.2k if it reads all its reference files. Until then it costs about 87 tokens; SKILL.md has 423 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~87
When it runs · the whole SKILL.md, loaded when a task matches: ~976
With references · SKILL.md plus every file in references/, read only if the agent opens them: ~3.2k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from github/awesome-copilot at commit 727ff2e, republished under its MIT licence (© github). 423 words, ~976 tokens.

Download SKILL.mdSave it as .claude/skills/dotnet-timezone/SKILL.md (or your agent's skills folder). This skill also uses 2 other files; get the full folder from GitHub.

name: dotnet-timezone
description: .NET timezone handling guidance for C# applications. Use when working with TimeZoneInfo, DateTimeOffset, NodaTime, UTC conversion, daylight saving time, scheduling across timezones, cross-platform Windows/IANA timezone IDs, or when a .NET user needs the timezone for a city, address, region, or country and copy-paste-ready C# code.

.NET Timezone

Resolve timezone questions for .NET and C# code with production-safe guidance and copy-paste-ready snippets.

Start With The Right Path

Identify the request type first:

Address or location lookup
Timezone ID lookup
UTC/local conversion
Cross-platform timezone compatibility
Scheduling or DST handling
API or persistence design

If the library is unclear, default to TimeZoneConverter for cross-platform work. If the scenario involves recurring schedules or strict DST rules, prefer NodaTime.

Resolve Addresses And Locations

If the user provides an address, city, region, country, or document containing place names:

Extract each location from the input.
Read references/timezone-index.md for common Windows and IANA mappings.
If the exact location is not listed, infer the correct IANA zone from geography, then map it to the Windows ID.
Return both IDs and a ready-to-use C# example.

For each resolved location, provide:

text

Location: <resolved place>
Windows ID: <windows id>
IANA ID: <iana id>
UTC offset: <standard offset and DST offset when relevant>
DST: <yes/no>

Then include a cross-platform snippet like:

csharp

using TimeZoneConverter;

TimeZoneInfo tz = TZConvert.GetTimeZoneInfo("Asia/Colombo");
DateTime local = TimeZoneInfo.ConvertTimeFromUtc(DateTime.UtcNow, tz);

If multiple locations are present, include one block per location and then a combined multi-timezone snippet.

If a location is ambiguous, list the possible timezone matches and ask the user to choose the correct one.

Look Up Timezone IDs

Use references/timezone-index.md for Windows to IANA mappings.

Always provide both formats:

Windows ID for TimeZoneInfo.FindSystemTimeZoneById() on Windows
IANA ID for Linux, containers, NodaTime, and TimeZoneConverter

Generate Code

Use references/code-patterns.md and pick the smallest pattern that fits:

Pattern 1: TimeZoneInfo for Windows-only code
Pattern 2: TimeZoneConverter for cross-platform conversion
Pattern 3: NodaTime for strict timezone arithmetic and DST-sensitive scheduling
Pattern 4: DateTimeOffset for APIs and data transfer
Pattern 5: ASP.NET Core persistence and presentation
Pattern 6: recurring jobs and schedulers
Pattern 7: ambiguous and invalid DST timestamps

Always include package guidance when recommending third-party libraries.

Show full SKILL.md (145 more words)Show less

Warn About Common Pitfalls

Mention the relevant warning when applicable:

TimeZoneInfo.FindSystemTimeZoneById() is platform-specific for timezone IDs.
Avoid storing DateTime.Now in databases; store UTC instead.
Treat DateTimeKind.Unspecified as a bug risk unless it is deliberate input.
DST transitions can skip or repeat local times.
Azure Windows and Azure Linux environments may expect different timezone ID formats.

Response Shape

For address and location requests:

Return the resolved timezone block for each location.
State the recommended implementation in one sentence.
Include a copy-paste-ready C# snippet.

For code and architecture requests:

State the recommended approach in one sentence.
Provide the timezone IDs if relevant.
Include the minimal working code snippet.
Mention the package requirement if needed.
Add one pitfall warning if it matters.

Keep responses concise and code-first.

References

references/timezone-index.md: common Windows and IANA timezone mappings
references/code-patterns.md: ready-to-use .NET timezone patterns

Files

SKILL.md and 2 other files (references) in skills/dotnet-timezone of github/awesome-copilot.

SKILL.md
references/code-patterns.md
references/timezone-index.md

Open the folder on GitHubat commit 727ff2e

Used in 1 other repository

We found 1 copy of this SKILL.md (exact, near-identical or edited) in other folders, from 1 other GitHub owner. This page covers the copy in github/awesome-copilot, which our catalogue first saw on October 7, 2026.

boshi-xixixi/TraeSkill.trae/Skills/.agents/skills/dotnet-timezone

Compare with similar skills

Dotnet Timezone next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Dotnet Timezone compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Dotnet Timezone this skillgithub/awesome-copilot	40k	1 repos	~976	Automated safety check: Pass	MIT	today
Minimax DOCXpoco-ai/poco-claw	1.4k	7 repos	~3.9k	Automated safety check: Pass	MIT	15 days ago
Speckit ConstitutionWeihanLi/WeihanLi.Common	242	11 repos	~2.1k	Automated safety check: Pass	Apache-2.0	23 days ago
Analyzing .NET Performancedotnet/skills	5.6k	3 repos	~3.1k	Automated safety check: Pass	MIT	today
Add Analyzerdotnet/roslynator	3.5k	—	~1.3k	Automated safety check: Pass	Custom licence	2 days ago
GitVersion .NET DevelopmentGitTools/GitVersion	3.1k	—	~1.7k	Automated safety check: Pass	MIT	yesterday

Similar skills

Minimax DOCX
poco-ai/poco-claw
Professional DOCX document creation, editing, and formatting using OpenXML SDK (.NET).
1.4k GitHub starsUsed in 7 repos~3.9k tokens
Documents & OfficeAuto-check passed
Speckit Constitution
WeihanLi/WeihanLi.Common
Create or update the project constitution from interactive or provided principle inputs, ensuring all dependent templates stay in sync.
242 GitHub starsUsed in 11 repos~2.1k tokens
DevelopmentAuto-check passed
Analyzing .NET Performance
dotnet/skills
Official
Scans C# and .NET code for about 50 performance anti-patterns and reports prioritized findings with concrete fixes, at a scan depth you choose.
5.6k GitHub starsUsed in 3 repos~3.1k tokens
DevelopmentAuto-check passed
Add Analyzer
dotnet/roslynator
Official
A skill your agent uses when adding a new RCS diagnostic in roslynator (RCS0 formatting, RCS1 general, RCS9 code-analysis), wiring roslynator EditorConfig options, or when docs say CHANGELOG.md…
3.5k GitHub stars~1.3k tokensUpdated 2 days ago
DevelopmentAuto-check passed
GitVersion .NET Development
GitTools/GitVersion
Gives repository-specific .NET guidance for GitVersion: build and test commands, central package management, project layout and coding conventions.
3.1k GitHub stars~1.7k tokensUpdated yesterday
DevelopmentAuto-check passed
Code Review
dotnet/macios
Official
Review dotnet/macios PRs against established rules. An agent skill from dotnet/macios.
2.9k GitHub stars~1.7k tokensUpdated today
DevelopmentAuto-check passed

Questions about Dotnet Timezone

What does Dotnet Timezone do?

.NET timezone handling guidance for C applications. An agent skill from github/awesome-copilot. Dotnet Timezone is an agent skill from github/awesome-copilot, published by the product's own GitHub organization.NET timezone handling guidance for C applications.

When should I use Dotnet Timezone?

Dotnet Timezone fits situations like: working with TimeZoneInfo; daylight saving time; scheduling across timezones; cross-platform Windows/IANA timezone IDs.

How do I install Dotnet Timezone in Claude Code?

Run `npx skills add github/awesome-copilot --skill dotnet-timezone -a claude-code`. Or copy the skill folder (skills/dotnet-timezone in github/awesome-copilot) into .claude/skills/dotnet-timezone in your project. Claude Code loads it when a task matches its description.

How do I install Dotnet Timezone in Codex?

Run `npx skills add github/awesome-copilot --skill dotnet-timezone -a codex`. Or copy the skill folder (skills/dotnet-timezone in github/awesome-copilot) into .agents/skills/dotnet-timezone in your project. Codex loads it when a task matches its description.

Can I use Dotnet Timezone in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add github/awesome-copilot --skill dotnet-timezone -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/dotnet-timezone, .gemini/skills/dotnet-timezone, .github/skills/dotnet-timezone and .opencode/skills/dotnet-timezone in your project.

What does Dotnet Timezone need to run?

SKILL.md names no scripts, command-line tools or credentials: Dotnet Timezone is instructions for the agent only.

Does Dotnet Timezone access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Dotnet Timezone safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Dotnet Timezone use?

Dotnet Timezone is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Dotnet Timezone use?

About 976 tokens (SKILL.md is roughly 3.9k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 2.2k tokens, read only when the agent opens those files.

What are the alternatives to Dotnet Timezone?

Skills that share tags, products or a category with Dotnet Timezone: Minimax DOCX (poco-ai/poco-claw, 1.4k stars), Speckit Constitution (WeihanLi/WeihanLi.Common, 242 stars), Analyzing .NET Performance (dotnet/skills, 5.6k stars) and Add Analyzer (dotnet/roslynator, 3.5k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Dotnet Timezone?

github (a GitHub organization, an official publisher) maintains it in github/awesome-copilot, which has 39,748 GitHub stars. The repository holds 417 skills in this directory. The repository was last updated on October 7, 2026.

Source: github/awesome-copilot on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.

Install Dotnet Timezone

Facts

At a glance

What it does

When your agent uses it

Example prompts

Workflow steps

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

.NET Timezone

Start With The Right Path

Resolve Addresses And Locations

Look Up Timezone IDs

Generate Code

Warn About Common Pitfalls

Response Shape

References

Files

Used in 1 other repository

Compare with similar skills

Similar skills

More from github/awesome-copilot

Related

Questions about Dotnet Timezone