A Civil Twilight
天气
¥15.00 · 专为 iPhone 设计。未针对 macOS 验证。
A Civil Twilight shows the four solar times that define usable light:
• First light — morning civil twilight begins
• Sunrise — morning twilight ends
• Sunset — evening twilight begins
• Last light — evening civil twilight ends
Glance at your watch or phone and know exactly how much light you have
left — out hunting, on the water, flying, photographing, or just planning
a dawn run.
WHY CIVIL TWILIGHT?
Civil twilight (sun within 6° below the horizon) is the standard that many
hunting regulations, FAA night-flight logging rules, and boating
navigation-light requirements are written around. It is also the
photographer's blue hour. This app gives you those boundaries precisely,
not approximately.
ON YOUR IPHONE
• Today's four times, front and center, on a twilight-sky backdrop
• Swipe up or down to step through days; jump anywhere with the
full-screen calendar
• Twilight alerts: get notified 5, 30, 60 minutes — or any custom
lead time — before first light or sunset
• A built-in field guide: what civil twilight is, the 6° rule, the
golden hour, and why these four times matter
• Choose your look: Twilight, Light, Dark, or Auto
ON YOUR APPLE WATCH
• All four times at a glance for your exact location
• Scroll through any day, ±180 days; tap the date for a calendar
• The period you are in right now is highlighted
• Watch-face complications: next light boundary, current solar window,
and first/last light
PRIVATE BY DESIGN
All calculations happen on your device using standard solar math. Your
location never leaves your watch or phone. No account, no ads, no
tracking, no network connection required.
Works anywhere on Earth, including high latitudes (where the sun may not
cross a boundary on a given day, the app shows it honestly).
From PresenceProof by JSC Biz LLC.
评分及评论
- 此 App 尚未收到足够的评分或评论，无法显示整体评分。
开发者“JSC BIZ, LLC”已表明该 App 的隐私规范可能包括下述数据处理方式。更多相关信息，请参阅 开发者隐私政策 。
未收集数据
开发者不会从此 App 中收集任何数据。
辅助功能
开发者尚未表明此 App 支持哪些辅助功能。 进一步了解
信息
- 提供者
- JSC BIZ, LLC
- 大小
- 10.6 MB
- 类别
- 天气
- 兼容性
设备需装有 iOS 16.0 或更高版本。
- iPhone
设备需装有 iOS 16.0 或更高版本。 - Mac
需要 macOS 13.0 或更高版本以及装有 Apple M1 或更高版本芯片的 Mac。 - Apple Vision
设备需装有 visionOS 1.0 或更高版本。 - Apple Watch
设备需装有 watchOS 9.0 或更高版本。
- iPhone
- 语言
- 英语
- 年龄分级
4+
- 4+
- 版权
- © 2026 JSC Biz LLC
