Omni Mundi Compendium OMC · A world of knowledge, in one place.
Knowledge network · U.S. edition · 12 fields

Omni Mundi Compendium

A world of knowledge, in one place.

Omni Mundi Compendium is a collection of independent knowledge sites: law, insurance, money, games, psychology, philosophy, physics and more. Each site publishes under its own name and its own subdomain, sharing one set of editorial standards — explain rather than sell, and say what you do not know.

Browse the full index Latest articles Draw a card
Counsel Shield Ledger Meridian Vitals Playtest Byte
Fields
12
Live
7
Articles
181
Domain
omc.center

What changes next

Deadlines and effective dates already reported across the network, in the order they arrive. Each one links to the article that carries the primary source.

The full calendar
  1. 15Oct

    Open now · closes 7 Dec 2026

    Medicare Open Enrollment

    Insurance & Medicare · CMS

  2. 1Nov

    Open now · closes 15 Jan 2027

    ACA Marketplace Open Enrollment

    Insurance & Medicare · CMS / HealthCare.gov

  3. 19Oct

    In effect since 19 Oct 2026

    Treasury's card-payment rule takes effect

    Money & tax · US Treasury

  4. 19Oct

    In effect since 19 Oct 2026

    USPS starts charging unpaid foreign customs charges back

    Law · USPS interim final rule

As of 3 Nov 2026. Subscribe instead of checking: add the calendar to your phone and the dates arrive as reminders. A date on this list is not a substitute for checking it — rules get stayed, vacated and amended.

Every site

Each one is its own site on its own subdomain, with its own byline and its own update schedule

See the details
Counsel
Law
Live

The rules, explained without the billable hour.

Plain-language guides to US law for people without a lawyer: employment, contracts, accidents and family — and what varies by state.

52 articles3 topicslaw.omc.center
Shield
Insurance
Live

Understand the policy before you pay for it.

How US health, life and auto insurance actually work: premiums, deductibles, networks, exclusions and claims, and the tradeoffs behind them.

26 articles3 topicsinsurance.omc.center
Ledger
Money
Live

Do the math first. Then decide.

Personal finance for US households: emergency funds, index funds, fees and mortgages. No forecasts, no hype — the arithmetic and the tradeoffs.

26 articles3 topicsfinance.omc.center
Meridian
Night sky
Live

The sky, measured rather than predicted.

Moon phase and rise times, sunrise and sunset, eclipses and meteor showers — computed from published ephemeris for where you actually stand.

24 articles4 topicssky.omc.center
Vitals
Health
Live

Evidence-based, not trending.

Lab results, chronic conditions, nutrition and exercise. We only cover the parts the evidence actually supports.

18 articles2 topicshealth.omc.center
Playtest
Games
Live

Reviews that respect your time and your wallet.

Game reviews and buying guides for people who play a lot and spend carefully: judging a game before you buy, and what free-to-play costs.

17 articles2 topicsgame.omc.center
Byte
Technology
Live

Tools that earn their place on your desk.

AI tools, hardware and gadgets — what they actually do, what they cost to run, and who they are for. Practical and evergreen, no launch-day hype.

18 articles2 topicstech.omc.center

5 more editions are in preparation on this same architecture, under the same standards — Mind (psychology), Inquiry (philosophy), Cosmos (physics), Archive (history), Nest (everyday life) — and each opens once it has published enough to be worth the visit.

Next to open: Meridian — moon phases, rise and set times, eclipses and meteor showers, computed from published ephemeris rather than written. Its address, sky.omc.center, is already configured and answering; the pages are being built.

Latest

Everything published across the network, newest first

All articles
Playtest Buying Guides

Do You Need More Console Storage? What Each Console Accepts, and What to Check First

Extra storage buys back re-download time, not backlog space. What PS5, Xbox and Switch 2 each accept, the figures that decide fit, and what to skip.

November 3, 2026 12 min read
Counsel Government Services

America.gov Weekly: A Late Changelog Line, a Contested Sign-In, and the First Audit of Chatbot Voter Guides

October 27–November 3, 2026: a late changelog entry, a withdrawn feature, SBA routing fraud tips to the portal, and Treasury choosing ID.me over Login.gov.

November 3, 2026 15 min read
Meridian Observing

The green flash lasts about a second and is entirely predictable

Refraction splits the setting Sun into coloured images stacked vertically. For a moment only the green one is above the horizon.

November 3, 2026 3 min read
Meridian Observing

Why stars twinkle and planets do not

Scintillation is an angular-size effect. A star is a point of light, so the atmosphere can knock it about; a planet is a small disc, so it averages out.

November 2, 2026 3 min read
Byte Security

Is a Password Manager Worth It? Judge It by the Failure You Can Recover From

A password manager does not delete risk — it concentrates it behind one master password. Decide by what you can recover from: a forgotten key, or a leak.

November 2, 2026 12 min read
Playtest Buying Guides

Cheap Keys from Gray-Market Resellers: What the Discount Actually Buys You

A key at a third of the price is a transfer of risk. Where reseller keys come from, what happens when one is revoked, and how to judge the trade.

November 1, 2026 8 min read

Why one hub and many sites

Topics stop diluting each other

Someone searching for a labor-law question and someone searching for quantum mechanics want completely different things. Crammed into one domain, both signals get muddied. Split apart, each site stays tightly on topic.

Independence builds trust

Law, insurance and money demand accuracy and a clear boundary of responsibility. A separate domain, a separate byline and a separate disclaimer make it easier to judge who wrote what.

Cost barely moves

One codebase, one build, one deploy. Adding a field means adding a directory — no extra server, no second release pipeline, no new certificate.