An Introduction to Day 4 — the Sacred Calendar, in Your Hands

Why "Day 4"?

On the fourth day of creation, the lights were set in the sky — "for signs and for seasons, and for days and years." Before there were clocks or calendars, time itself was given a witness: the sun to rule the day, the moon the night, and the stars to mark the seasons.

Day 4 is named for that moment. It is a calendar app, but not another scheduler — it is a way of seeing time the way the fourth day frames it: as something given, ordered, and worth watching.

The 364-day sacred year

At the heart of Day 4 is a sacred year of exactly 364 days — a reckoning preserved in ancient sources and loved for one striking property: 364 divides evenly into 52 weeks. Not roughly. Exactly.

That single fact changes everything. In a 364-day year, the Sabbath never drifts. Every feast, every appointed time, every season falls on the same day of the week, every year. The calendar stops being a moving target and becomes a steady rhythm you can actually live by.

Day 4 anchors this year to the spring equinox — the turning point the fourth day's own lights mark in the sky. From that anchor, the year unfolds in four even seasons, each guarded by its own threshold days, with the Sabbaths and appointed times in their places.

A witness, not a replacement

You don't have to leave your everyday calendar behind. Day 4 overlays the sacred year onto the calendar you already live in, so a glance shows you both at once: today's ordinary date, and today's place in the sacred year — which week, which season, how near the next Sabbath or feast stands.

That is the quiet idea behind the whole app: not another system to maintain, but a witness of time running alongside your life.

What you'll find inside

Today — your day at a glance: the sacred date, the day's devotional, and what stands near on the horizon.

Calendar — the full year laid out, everyday and sacred side by side, with the feasts and appointed times marked in their places. Travel the timeline through the ages — all the way back to the beginning.

Feasts — every appointed time explained in plain language: what it is, when it falls, and why it matters.

Manna — seven small cards gathered fresh each day: a verse, an encouragement, a sign in the sky, a thought worth carrying.

Devotional — a daily reading that follows the sacred year rather than a generic reading plan, so what you read walks in step with where the year stands.

The Scroll of Generations — trace every generation from Adam onward, and find where a birthday like yours falls among them.

Prayer — the hours of prayer with guided daily sequences, and widgets that keep the day, the moon, and the year ahead within sight.

Free to begin, free to stay oriented

Day 4 opens without an account — no sign-up, no paywall at the door. Today's devotional, your sacred date, and the next Sabbath are always free, on every platform.

Going deeper — the full year and every future year, the whole timeline back to Creation, the Scroll of Generations, all seven daily Manna cards, custom special days, calendar export and themes — is one simple subscription, with a free trial to begin.

Walk the year with us

Day 4 is available on iPhone and iPad, on Android, and on the web — the same sacred year, the same quiet witness, wherever you are.