Why first light is not a clock time

A practice that begins with the light does not begin at a number. First light moves through the year, and across a single time zone too: on 21 June the sun rises at 06:01 in Mumbai and 05:08 in Varanasi: fifty-three minutes apart, on the same clock.

Risetime sets an alarm on a moment of the sun instead of a clock time. That moment is an anchor, the distance you keep from it an offset.

Four ways to name first light

What you're afterWhere the sun isIn Risetime
Sunrisethe disc clears the horizonthe built-in Sunrise anchor
Civil dawn6° below the horizona solar angle anchor, −6° morning
Nautical dawn12° below−12° morning
A point inside the nightpart of the way from sunset to sunrisea Division anchor: Night, in N parts

Definitions vary; these are the common ones. The app holds the one you set at every latitude and season — which a fixed “forty-five minutes before sunrise” cannot, the length of twilight changing with both.

Risetime alarm list with four alarms, all repeating every day: 05:29 on Last part of the night, 05:50 on Nautical dawn, 06:29 on Civil dawn, and 07:02 at Sunrise.
The four rows of the table, each as its own alarm.

Set the practice on sunrise

  1. On the Alarms tab, press +.
  2. In the top menu, choose Sunrise.
  3. Leave the dial centred to ring at sunrise, or turn it to the gap you want, up to 11 h 59 min either way.
  4. Press OK, then open the alarm in the list and set Repeat.

And the alarm early risers keep asking for is the other one: an alarm to go to bed, not one to wake up. Put it on the Sunset anchor with an offset, repeating — the same four steps. How to set a sunrise or sunset alarm

Before the sun: dawn by angle

  1. Open Settings → Anchors and press + (it appears once the section is unfolded).
  2. Keep the type on A solar angle. Enter −6° for civil dawn or −12° for nautical dawn, direction morning. It moves a tenth of a degree at a time, between −30° and +30°.
  3. Name it, pick a colour — it will not save without one — and save.
  4. On the Alarms tab, put an alarm on it.

Far north or south, the sun never gets that low for part of the year. The editor says so as you create the anchor — “The sun does not reach this angle here from X to Y”, with your own dates — and on those days the alarm stays silent rather than ring at a moment the sky never produced. Nothing is invented.

The anchor editor on A solar angle, set to −6.0° in the morning, named Civil dawn, with the preview: Next: 06:29.
Civil dawn as an angle: six degrees below the horizon, in the morning.

A fraction of the night

You can time the morning by the night rather than the dawn: a point a given way through the dark.

  1. Settings → Anchors → +, and switch the shape to Division.
  2. Scope Night, then the number of parts and the position — 2 to 48 parts, any boundary inside them.
  3. Name it, pick a colour, save. A fresh draft's title reads Night · 1/15; it follows whatever you set.
  4. Put an alarm on it.

The night here is exactly one thing: from a sunset to the following sunrise, split evenly. Inside the polar circles such a night may not exist; the anchor then has nothing to divide, and the app says so — without the dated range the angle form gives, which this shape has not. Matching a published timetable? Advanced → Shift by N minutes moves an anchor you made by up to thirty minutes either way.

The anchor editor on A fraction of the day or night, with Night selected, Number of parts set to 8 and Position on 7/8, named Last part of the night, with the preview: Next: 05:29.
The night split into eight parts, the alarm on the last of them.

What Risetime does not do

Its own labels stay astronomical — Sunrise, a solar angle, Night · 1/15 — while the name you type is yours. It is an alarm clock, nothing more:

  • No chime partway through a session — no screen builds one timer out of several, so a thirty-minute sit cannot sound at ten and twenty.
  • No meditation sounds, nothing guided. It rings; you stop it.
  • Nothing lunar — Risetime does not compute the Moon: no phase, no lunar date.
  • No sleep tracking, no account, no cloud, no internet permission at all — your location never leaves the phone. Privacy policy

How anchors and offsets work

What it costs

Risetime is free for up to three alarms and three timers — for good. Need more? Use those three first, and see if it's worth your support: supporters get unlimited alarms and timers, yearly or once. If not, I'll be happy to hear you out.

Begin with the light.

Google PlayOpen testing

Risetime is in open testing, so you join the test first and install from Play afterwards. Without that step Play may tell you the app isn't available in your country.