Free Dark Sky Window · Sun & Moon Times
Tonight's rise and set times plus the longest moonless astronomical darkness — works at any latitude, with Guyana defaults.
Georgetown
6.8000°N, 58.1700°W
Observer
Georgetown
6.8000°N, 58.1700°W
Ephemeris times in this tool are labeled in America/Guyana (UTC−4).
Date
Sun
Moon
Dark Sky Window
Moonless astronomical darkness (sun below −18°)
Timezone: America/Guyana
About This Tool
What is the dark sky window?
The longest interval during astronomical night (sun below −18°) when the moon is also below the horizon. This is the prime time for deep-sky astrophotography.
Why location matters
Near the equator, twilight is short (~70 min) and the sun rises quickly. The dark window can be narrow near full moon — knowing its timing for your observer site is critical for planning.
Planning estimate
Times are computed from precise astronomical models (no weather). This tool currently labels clock times in America/Guyana (UTC−4). For full sky event planning, see Sky Events.