cesiumjs-time-properties SKILL.md skillA
cesiumjs-time-properties from cesiumgs/cesiumjs-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add cesiumgs/cesiumjs-skills/cesiumjs-time-properties@git:20260827.49e0612Pins git:20260827.49e0612 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- cesiumgs/cesiumjs-skills
- Path
skills/cesiumjs-time-properties/SKILL.md- Versions recorded
- 4
- Latest version
- git:20260827.49e0612, committed Aug 27, 2026
- First version recorded
- Apr 1, 2026
- Size
- 30,076 bytes
- Repository stars
- 194
- License
- Apache-2.0
CesiumJS time, properties, and animation - Clock, JulianDate, TimeInterval, Property, SampledProperty, CallbackProperty, PathMode, interval and sampled path materials, interpolation, splines, CZML temporal data. Use when making entity attributes or path materials time-dynamic, configuring the simulation clock, interpolating positions, or working with sampled, interval, or callback properties.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# CesiumJS Time, Properties & Animation
Version baseline: CesiumJS v1.144
Covers the temporal data-binding layer: Clock/JulianDate time system, the Property hierarchy that makes entity attributes change over time, interpolation algorithms, splines, and material properties. Properties live here (not with Entities) because SampledProperty and CallbackProperty are meaningless without Clock/JulianDate. The Material class (Fabric) belongs in cesiumjs-materials-shaders.
## JulianDate -- The Time Primitive
Stores whole days + fractional seconds separately for precision. Always uses TAI internally.
```js
import { JulianDate } from "cesium";
// Creation: fromIso8601 (most common), fromDate, now
const date = JulianDate.fromIso8601("2025-06-15T12:00:00Z");
const jd = JulianDate.fromDate(new Date("2025-06-15T12:00:00Z"));
const now = JulianDate.now();
// Conversion: toIso8601, toDate, toGregorianDate
const iso = JulianDate.toIso8601(date); // "2025-06-15T12:00:00Z"
const greg = JulianDate.toGregorianDate(date); // {year, month, day, hour, ...}
// Arithmetic -- all require a result parameter to avoid allocations
const r = new JulianDate();
…Read the whole file at its exact version.
How to install
mdr add cesiumgs/cesiumjs-skills/cesiumjs-time-properties@sha256:cf62056bb549fdd0The line at the top of this page pins the label git:20260827.49e0612, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_rlwpxkbz5thlejem)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 4 versions of this file, between Apr 1, 2026 and Aug 27, 2026, about one every 49 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260827.49e0612 latest | 2026-08-27 | 49e0612 | 30,076 B | A | view · diff |
| git:20260716.ba1c2d1 | 2026-07-16 | ba1c2d1 | 18,417 B | A | view · diff |
| git:20260601.e67e5c6 | 2026-06-01 | e67e5c6 | 15,189 B | A | view · diff |
| git:20260401.d67bc27 | 2026-04-01 | d67bc27 | 15,191 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (30076 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
cesiumgs/cesiumjs-skills · 194 stars · license Apache-2.0 · pushed 2026-09-14 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_rlwpxkbz5thlejem GET https://markdownregistry.com/api/v1/resolve?ref=cesiumgs/cesiumjs-skills/cesiumjs-time-properties GET https://markdownregistry.com/api/v1/blob/cf62056bb549fdd0fea455a8323d1638cc5b793c7aef27b243435a782f878a63
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Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.