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fix(daytime): improve accuracy of northern_tilt

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Vukašin Vojinović 2026-02-19 19:32:13 +01:00 • committed by Michael Murphy
parent 787c5ed49f
commit eb8d0e349f
1 changed files with 4 additions and 4 deletions
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8
cosmic-settings/src/subscription/daytime.rs
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@ -49,7 +49,9 @@ async fn inner(mut tx: Sender<bool>) -> anyhow::Result<()> {
let coord = Coordinates::new(loc.latitude(), loc.longitude()).unwrap(); let coord = Coordinates::new(loc.latitude(), loc.longitude()).unwrap();
let now = jiff::Zoned::now(); let now = jiff::Zoned::now();
let now_in_seconds = now.timestamp().as_second(); let now_in_seconds = now.timestamp().as_second();
let northern_tilt = now.month() >= 3 && now.month() <= 9; // roughly matches the dates of the spring and autumn equinoxes
let northern_tilt = (79..=266).contains(&now.day_of_year());
let is_north = coord.lat() > 0.0;
// TODO: remove chrono if sunrise adds support for jiff - https://github.com/nathan-osman/rust-sunrise/pull/20 // TODO: remove chrono if sunrise adds support for jiff - https://github.com/nathan-osman/rust-sunrise/pull/20
let date = NaiveDate::from_ymd_opt(now.year() as i32, now.month() as u32, now.day() as u32) let date = NaiveDate::from_ymd_opt(now.year() as i32, now.month() as u32, now.day() as u32)
.expect("jiff date is valid"); .expect("jiff date is valid");
@ -67,9 +69,7 @@ async fn inner(mut tx: Sender<bool>) -> anyhow::Result<()> {
// transition out of polar day // transition out of polar day
(None, Some(sunset)) => now_in_seconds <= sunset, (None, Some(sunset)) => now_in_seconds <= sunset,
// polar day // polar day
(None, None) => { (None, None) => is_north == northern_tilt,
(coord.lat() > 0.0 && northern_tilt) || (coord.lat() < 0.0 && !northern_tilt)
}
}; };
tx.send(daytime).await?; tx.send(daytime).await?;