Will You Run Out of Daylight?

Being caught outdoors after dark is a leading cause of hiking accidents and outdoor emergencies. Check your daylight margin before heading out.

Approximate Latitude

Higher latitudes have more seasonal daylight variation.

Season

Season dramatically affects available daylight hours.

Activity Start Time

Earlier starts give more daylight margin.

Estimated Activity Duration (hours)

Include buffer time for rest stops and unexpected delays.

Terrain Familiarity

Unfamiliar terrain increases risk if caught in the dark.

Select all that apply

Carrying a headlamp or flashlight

Methodology: Uses simplified solar position calculations based on latitude and season. Sunset estimates are approximate and should be verified with local weather services for precise timing.

Frequently Asked Questions

Why is being caught after dark dangerous?

After sunset, trail visibility drops rapidly, making it easy to lose the trail, trip on obstacles, or lose footing on exposed terrain. Temperatures also drop quickly, increasing hypothermia risk. Most search and rescue callouts happen because hikers underestimated time and ran out of daylight.

How much daylight buffer should I plan for?

Plan to finish your activity at least 1 hour before sunset. Twilight provides some light for 20-40 minutes after sunset, but navigating trails in twilight is risky. In mountainous areas, sunset can be effectively 30-60 minutes earlier due to terrain blocking the sun.

Does carrying a headlamp eliminate sunset risk?

A headlamp reduces risk but does not eliminate it. Hiking in the dark is significantly more dangerous than daylight hiking, even with a light. A headlamp is an essential safety backup, not a plan A. Always aim to complete activities in daylight.

How does ImAlive help with outdoor safety?

ImAlive provides a daily check-in that alerts your emergency contacts if you do not respond. For outdoor enthusiasts, this means if you are caught out after dark, lost, or injured, someone will know to send help even if you cannot call. It is a free safety net for every adventure.