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By Mark Hamilton

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Astronomy Calc is an easy to use calculator for manipulating astronomical distances, dates & times, and coordinates, with many more capabilities coming soon.

Supported Distance Conversions:
- Meters
- Kilometers
- Miles
- Astronomical Units
- Light Years
- Parsecs

Supported Date & Time Systems:
- Local civil time (LCT)
- Local Sidereal Time (LST)
- Greenwich Sidereal Time (GST)
- Universal Time (UT)
- Terrestrial Dynamical Time (TDT)
- Geocentric Coordinate Time (TCG)
- including Julian Date (JD), Modified Julian Date (MJD), and Truncated Julian Date (TJD)

Supported Coordinate Systems:
- Equatorial in Right Ascension (EQ(RA))
- Equatorial in Hour Angle (EQ(HA))
- Horizon (HOR)
- Ecliptic (ECL)
- Galactic (GAL)

Date & Time Features:
- Summary of time in all supported systems
- Calculation of time from an offset
- Conversion of time from one system to another with translation of location

Coordinate Features:
- Conversion of coordinates from one system to another

Solar Calculations:
- Vernal Equinox
- Summer Solstice
- Autumnal Equinox
- Winter Solstice
- Carrington Rotational Number
- Morning Twilight
- Sunrise
- Transit
- Sunset
- Evening Twilight

If you experience any trouble with the application, please visit my website as indicated below, and do not hesitate to send bug reports, enhancement requests, and suggestions via email.

What's New in Version 1.2.2

Fixed some Equatorial coordinate calculation errors.

iPhone Screenshot

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  • $0.99
  • Category: Education
  • Updated:
  • Version: 1.2.2
  • Size: 0.7 MB
  • Languages: English, French, German, Italian, Spanish
  • Seller:

Compatibility: Requires iOS 3.1.3 or later. Compatible with iPhone, iPad, and iPod touch.

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