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A5 Day Book 2028 standing closed on a plain surface, dated diary cover.

Plain Lab · agenda

Day Book 2028

A dated diary with one sourced fact at the foot of each page: a birth, verified against its own record, never invented to fill the space.

Price

from Rp 73.000

Softcover, French link sewing. Printed and sewn to order.

Ships in 6–14 business days · 7-day returns

4.9 from 85 buyer reviews of Hibrkraft

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Every cover and binding option is quoted when you order.

Specification

Type
Diary / agenda
Trim
148 × 210 mm · 5.827 × 8.268 in
Pages
400
Leaves
200
Sheets
100
Signatures
20 × 20pp
Spine
22.88 mm
Paper
white
Ruling
lined
Rows per page
24
Year
2028
Covers
1 January – 31 December 2028

Build it

Rp 73,000

Open to any date and the bottom of the page carries one line: a birth, tied to that day, with the source behind it. Most day-by-day diaries fill that space with a saint's day or a trivia line copied from wherever the last one came from. This one does not carry a line unless the date behind it holds up.

Every entry traces to a citable record with an identifier and a web address kept alongside it, and every birth is checked against that same record for the day, the month and the year together. A date that disagreed with its own source was dropped rather than kept for the sake of a full page. Where nothing survived that check, the footer is left empty. An empty footer means nobody was found for that day, not that nobody looked.

Above the footer, the page still works as an ordinary diary: room to write, a month spread ahead of each month, and a year page at the front. College-ruled notes pages close the working section, for whatever a single dated line has no room for.

What is inside

Day
366pp
One page per day of the year, closed with a sourced fact or an empty footer, never a placeholder.
Month
12pp
A month spread ahead of each run of day pages.
Notes
12pp
College-ruled notes pages closing the working section.
Year
1pp
A single year-at-a-glance page at the front.
Reference
9pp
Owner details, conversion tables worked from definitions, and emergency numbers checked against two independent sources.

In every book

The same six pages open every book: your details, who to call, the signs to point at when you have no shared language, and the map. They sit at the front because the moment you need them is not the moment to be flicking through.

This book belongs to
One page for your name and number, so a book that goes missing can come back.
My details
Blood group, allergies, who to call. Written once, carried everywhere.
Emergency numbers
Forty countries, taken from Wikidata property P2852 (CC0), agreed across two sources, every row carrying its QID. Numbers change and a book does not — verify locally on arrival.
Point at this
A pictogram grid captioned in English above and Indonesian below, for when there is no shared language.
World map
Natural Earth 110m, public domain, equirectangular, with UTC hour meridians computed from the projection rather than from a timezone database. For orientation and for pointing at, not a navigation chart.
Conversion tables
Computed from definitions — 25.4 mm to the inch — and not copied from anywhere, so every row can be checked by anyone holding the book.
Pen test leaf
The last page, printed for it on purpose. Every notebook is used this way; printing it deliberately is cheaper than losing the last leaf to it by accident.

The film

Page by page

A vertical film, 52 seconds: the cover, the ruling page, then 5 reference pages. Synthesised ambient bed, no dialogue — captions in three languages.

A vertical film from our own bench — this page contacts nobody's server to play it, and downloads nothing until you press play.

What is inside this book?

Five pages from the Day Book laid out as cards: a day page with a sourced footer, a day page with an empty footer, a month spread, a notes page, and the pen test page.
Five pages rendered straight from the print file: a day page with its footer filled, a day page with the footer left empty, a month spread, a notes page, and the pen test leaf at the back. Both footers are real pages from the same file. Neither is a mock-up standing in for the other.
Specification card listing the Day Book contents: day pages, month spreads, notes pages, year page and reference section.
Every day of the year gets its own page, closed with a footer that carries a sourced fact or nothing at all. Month spreads run ahead of each month, college-ruled notes pages close the working section, and a year page opens the book. The reference section carries conversion tables worked from definitions and emergency numbers checked against two independent sources.
Computed from definitions — 25.4 mm to the inch — and not copied from anywhere, so every row can be checked by anyone holding the book. — Day Book 2028
Conversion tables
Forty countries, taken from Wikidata property P2852 (CC0), agreed across two sources, every row carrying its QID. Numbers change and a book does not — verify locally on arrival. — Day Book 2028
Emergency numbers
One page for your name and number, so a book that goes missing can come back. — Day Book 2028
This book belongs to
A pictogram grid captioned in English above and Indonesian below, for when there is no shared language. — Day Book 2028
Point at this
Natural Earth 110m, public domain, equirectangular, with UTC hour meridians computed from the projection rather than from a timezone database. For orientation and for pointing at, not a navigation chart. — Day Book 2028
World map

The PDF of this book.

We do not sell the design or the PDF. Download it free, with no conditions at all, not even tracking. What we sell is the book, a real object that is genuinely useful and can help your life.

Download PDF PDF · 400 pages · 0.9 MB

Made at the Hibrkraft bindery, Bogor · about the maker

Try the ruling on paper first

The same ruling exists as a free, ready-to-print sheet. Print one, write on it, and decide whether the pitch suits your hand before you order the book.

College Ruled Paper, 7.1 mmFree PDF · 5 paper sizes

Books that sit alongside it

Questions

Does every day have a fact?

No. A day with no verified record prints an empty footer. An empty footer is not a placeholder; it means the check found nothing that held up, not that nothing was tried.

How was each fact checked?

Each one traces to a citable record, kept with its identifier and its web address, and each birth is checked against that record for the day, the month and the year together. Anything that disagreed was dropped.

Can you tell me whose birthday is on a given date?

Open the book to that date. The facts are not listed here; they are printed on the page they belong to.

Is it still usable as a normal diary?

Yes. The fact sits in a footer at the bottom of the page. The rest of the page is yours.

Is 2028 treated any differently?

No. Every day in the year gets its own page and its own check, leap day included.

As they were in the days of those whom we have buried, so are they now also, and no otherwise.
Marcus Aurelius, Meditations, c. 175

Price

from Rp 73.000

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Track Record

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The Hibrkraft team outside the workshop in Bogor
The Hibrkraft team, Bogor
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