If it's daytime and we're outside, I can point north by pointing perpendicular from where the sun is heading. If it's nighttime and we're outside, I can point n

If it's daytime and we're outside, I can point north by pointing perpendicular from where the sun is heading. If it's nighttime and we're outside, I can point north by finding polaris. Asking me to point north inside a building with my eyes closed is a different story.