Example image of eyePlorer eyePlorer map for 'Day': Hour Time Units of measurement International System of Units Second Daytime (astronomy) Calendar date Week German language Indo-European languages Latin Norwegian Old English Sanskrit Welsh language Coordinated Universal Time Leap second Time scale Atom Caesium Energy level Hyperfine structure International Bureau of Weights and Measures Radioactive decay Stationary state Decimal time French Republican Calendar Astronomy Sidereal time Solar time Star 12-hour clock English language Evening Greek language Horizon Morning Night Nychthemeron Sunrise Sunset Orbit Rotation Sunlight Minute of arc Earth's atmosphere Refraction Latitude Longitude Year