One Swiss Knife in the exact shape of your life.

The Almanac

The Almanac, a small reckoner that computes in your browser and stores nothing. No account, no cloud, no telemetry.

Live · runs in your browser · no network

This is not a screenshot. It's the real tool, running right here: go on, put something in it.

Open the demo full-screen: /demos/the-almanac.html

Forged into a knife, this tool ages with use: the blades you reach for wear soft, entries you tend keep their bloom, and the years travel with the file through every reforge.

Gardeners, stargazers, and people who simply like to know when the light goes: the sky runs on arithmetic, and The Almanac does it for you. It reckons the sky's schedule — the turning of the seasons and the moon's comings and goings — computed fresh in the page whenever you ask. No subscription to the heavens required; they broadcast for free, and this does the sums.

KindReckoner · computes, stores nothing
CategoryReckoners
Weight1
Manual:

Standing facts

In ten years

The Almanac computes; it doesn't hoard. Open the file in 2036 and it will do the same arithmetic it does today, because the arithmetic is written into the file and nothing about it needs a server to agree.

If Offline.Ltd closes tomorrow, nothing on your machine notices. That isn't a marketing promise; it's simply what a file is.

Getting your data out

There is nothing locked in to get out: copy the numbers, or keep the file. Either way you owe no one a request form. No export queue, no "we'll e-mail you a link within 48 hours", no format that only one vendor can read.

Copy the file to a USB stick, a NAS, a folder your devices already sync. It runs on Windows, macOS, Linux, Android and iOS, online or off, because a browser is the only thing it ever needed.

Who else sees this

Nobody. The Almanac works out its answer in your browser and forgets it the moment you close the tab: there is no store to breach, because nothing is stored. There is no account, no telemetry, no analytics, and no code in the file that opens a network connection, pull the cable and watch it carry on working. How privacy works across the Reckoners tools →

Questions people ask

01

Does an almanac app need the internet to know about the moon?

Not this one — the sky is pleasingly predictable, so everything is computed right in the page from arithmetic. It is a single HTML file that runs offline, stores nothing, and never asks where you are without you telling it.

02

Who is The Almanac for?

Gardeners planning by the season, photographers chasing good light, amateur astronomers, and anyone who likes knowing what the moon is up to. It is the back page of the farmer's almanac, minus the horoscopes.

03

Is this the same as the paper farmer's almanac?

It is the reckoning part of one — the celestial arithmetic, computed on demand rather than printed a year in advance. The folk wisdom and long-range weather guesses you will have to supply yourself.

Go deeper on The Almanac

More Reckoners

Fits your knife at weight 1. Nothing here is final, Knife follows Life. Reforging within your tier is free, forever. Add it, drop it, reforge it later; the file stays yours either way.

Share On X / Twitter → On LinkedIn → On Reddit →