DayNightTerminator

DayNightTerminator[] is a one-dimensional GeoGraphics primitive that represents the separation line between the halves of the Earth currently in daytime and nighttime.

DayNightTerminator[datespec] represents the separation line between day and night for the specified date.

Examples

Show the day/night boundary:

GeoGraphics[{Red, DayNightTerminator[]}]

For a specific date:

GeoGraphics[DayNightTerminator[DateObject[{2024, 6, 21}]]]

Please visit the official Wolfram Language Reference for more details.