Accuracy and methodology
How accurate are sun position apps?
What sun apps calculate accurately, what affects real-world accuracy, and how SunCast handles sun, shadow, map, terrain, and weather data.
SunCast Guides
Sunlight, shadow, and sun position guides
These guides explain how to plan light direction, shadows, sun exposure, golden hour, and real-world sunlight decisions with SunCast. Start with the accuracy guide when you need to understand what a sun position app can and cannot promise.
Last updated: July 14, 2026
Home and real estate
How to check apartment sunlight before renting
Check apartment sunlight before renting with a practical viewing plan for window direction, seasonal sun, nearby shadows, and the best time to visit.
Architecture and construction
How to simulate shadows from a planned building
Learn how to simulate shadows from a planned building with SunCast, including height, rotation, seasonal checks, nearby properties, and planning limits.
Gardening
How to map sun exposure in a garden
Map garden sun exposure by checking direct sun, partial shade, seasonal changes, fences, trees, and building shadows before planting.
Photography
How to plan a photoshoot around light direction
Plan a photoshoot around light direction by checking sun angle, backlight, side light, shadow direction, golden hour, blue hour, and cloud cover.
Home sunlight
How to know where shadows will fall on my house
Find where shadows will fall on your house by checking sun direction, rooflines, neighboring buildings, trees, season, and time of day.
Solar planning
Can a sun tracker help with solar planning?
Learn how a sun tracker can support early solar planning by checking sun path, roof shade, seasonal shadows, and when to call a solar professional.
Outdoor planning
How to find shade for a campsite or picnic
Find shade for a campsite, picnic, or outdoor stop by checking sun path, terrain, trees, afternoon heat, sunrise, sunset, and cloud cover.
