Symbols & Calculations Preferences

All of these settings are Global and are used throughout the program in every feature.

Ayanamsa

• When a feature is displaying Sidereal data, this Ayanamsa settings is used.
• Ayanamsa – Select a pre-defined Ayanamsa from the dropdown, or choose “Your Ayanamsa” at the bottom to set a custom value.
• Custom Ayanamsa – To use your own custom value for the Ayansamsa:
  • Select Your Ayanamsa at the bottom of the Ayanamsa list.
  • Enter your value in the box. Use a value for the Epoch Jan 1, 2000. iPhemeris will interpolate the correct value for other dates.
  • To calculate the correct value: ValueNow – ((CurrentYear – 2000) * 0.01396887831940).

Note: The degree offset from Tropical positions for pre-defined Ayanamsa are listed at the end of this documentation. Values shown are for the Epoch starting Jan. 1, 2000. iPhemeris adjusts those to the date of the Chart or Table being used. It does this using the mean rate of annual precession (0.01396887831940 degrees per year).

Symbols
Select the symbol used to represent Earth, Pluto, Eris & Vulcan. This applies to all features throughout iPhemeris.

Calculations

Part of Fortune – Sets the calculation used by all features. Most ancient authorities advocated using a different algorithm for day and night births. However, due to a mis-translation of Ptolemy’s writings many Astrologers commonly believe he advocated using the same formula for day and night births. Recent translations make it clear he did not. It’s your choice, iPhemeris offers both:

• • Different for Day and Night Births (default):
    • Part of Fortune for Day Birth = Ascendant + Moon – Sun.
    • Part of Fortune for Night Birth = Ascendant + Sun – Moon.
  • Same for Day or Night Births: Part of Fortune = Ascendant + Moon – Sun.

Lunar Nodes – Use either True Node or Mean Node in all features.

Black Moon – Use either True or Mean values for Lunar Apogee, also know as Black Moon and Lillith.

Languages
Use this setting to force iPhemeris to use one of the supported translations and override your system language settings.

Calendars
Choose the first day of the week (Sunday or Monday) for calendars displayed on the following feature tabs:

• Ephemeris and Declination/Latitude
• Aspect Calendar
• Transit Calendar