Location Deep Dive
Some parts of the chart describe the sky as seen from one place.
The Moon's phase, zodiac position, and ecliptic latitude are shared sky patterns. Rise and set times, culmination, local calendar dates, and visibility depend on where the chart is calculated.
What location changes
Location sets the observer's longitude, latitude, time zone, and horizon. Longitude shifts local sky timing by about four minutes for each degree east or west. Latitude changes the height and shape of the Sun's and Moon's daily arcs, so the same lunation can rise, culminate, and set differently in different places.
Time zone turns astronomical instants into local calendar dates and clock times. That means a global event can fall on one printed date in one place and a neighboring date somewhere else.
Lunation Chart features
In the Lunation Chart, the most location-dependent features are the Moon at culmination, the Moon and Sun elevation band, Gregorian day and hour, and local visibility notes in Rare Events. These features describe what the sky does from the chart location.
Moon phase, Moon in the zodiac, the lunation name, and the orbit diagram are not primarily local features, though their printed dates can still be affected by the chart's time zone.
Year Chart features
In the Year Chart, location matters most for Gregorian month and day, local Rare Events, and any festival spans anchored to local sunset. The chart date range can also reflect local calendar boundaries.
Lunar ecliptic latitude, planetary zodiac bands, lunation sequence, and the astronomical solstice and equinox pattern are mostly global. Their local clock time or printed date may shift, but the underlying alignment is the same event.