update

2026-07-21 01:37:35 -07:00
parent a5284f679e
commit 88aaab2e00
5 changed files with 300 additions and 16 deletions
@@ -37,6 +37,14 @@
    };
  }

+  function buildRoundedIsoTimestamp(stepMinutes = 5) {
+    const rounded = new Date();
+    const minute = rounded.getUTCMinutes();
+    const bucket = Math.floor(minute / stepMinutes) * stepMinutes;
+    rounded.setUTCMinutes(bucket, 0, 0);
+    return rounded.toISOString();
+  }
+
  function buildStellariumObserverUrl(geo) {
    const normalizedGeo = normalizeGeoForSky(geo);
    if (!normalizedGeo) {
@@ -47,7 +55,7 @@
    wrapperUrl.searchParams.set("lat", String(normalizedGeo.latitude));
    wrapperUrl.searchParams.set("lng", String(normalizedGeo.longitude));
    wrapperUrl.searchParams.set("elev", "0");
-    wrapperUrl.searchParams.set("date", new Date().toISOString());
+    wrapperUrl.searchParams.set("date", buildRoundedIsoTimestamp(5));
    wrapperUrl.searchParams.set("az", "0");
    wrapperUrl.searchParams.set("alt", "90");
    wrapperUrl.searchParams.set("fov", NOW_SKY_FOV_DEGREES);