🌅 Enhanced Sun & Twilight Calendar v8.0

Today's Information (Rome, Italy)
Date: May 15, 2026
Astronomical Dawn: 03:53
Nautical Dawn: 04:38
Civil Dawn: 05:17
Sunrise: 05:49
Solar Noon: 13:06
Sunset: 20:23
Civil Dusk: 20:54
Nautical Dusk: 21:34
Astronomical Dusk: 22:19
Day Length: 14h 33m

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Location Name

Calendar name: "☀️🌅 Sun & Twilight - Your Location"

Latitude *

Decimal format (e.g., 41.9028)

Longitude *

Decimal format (e.g., 12.4964)

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Event Types *

💡 Each creates 2 events (dawn + dusk). Select fewer to get complete data in notes!

🌅 Civil Twilight - First Light → Sunrise | Sunset → Last Light

⚓ Nautical Twilight - Nautical Dawn → First Light | Last Light → Nautical Dusk

🌌 Astronomical Twilight - Astro Dawn → Nautical Dawn | Nautical Dusk → Astro Dusk

☀️🌙 Day & Night - Daylight (with stats) | Night (with stats & moon phase)

Morning Event Offset (minutes)

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Evening Event Offset (minutes)

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High-Precision NREL Calculations v7.3:

Uses NREL SPA-inspired algorithms for maximum accuracy. All times calculated with proper solar declination, equation of time, and atmospheric refraction. Always displays 24-hour time format.

Astronomical Terminology:

Civil: Sun 0-6° below horizon - outdoor activities possible
Nautical: Sun 6-12° below horizon - horizon visible at sea
Astronomical: Sun 12-18° below horizon - last/first astronomical light

Smart Mode:

Select only Day & Night events to get all twilight times embedded in notes for a clean calendar!