Planet's Julian Date of a point in orbit

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To determine the Julian Date of periapsis or other orbital points for planets in the solar system, users can utilize the JPL Horizons system. By selecting a planet and adjusting the settings to display heliocentric range, users can generate a chart showing the distance from the sun over a specified date range. The periapsis date is identified when the distance stops decreasing and begins to increase. If the periapsis does not appear within the chosen date range, users are advised to try a different range. For example, Mars' next periapsis was identified on March 9, 2011.
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I would like to know the Earth Date or Julian Date of the Periapsis, Vernal Equinox or any other point in the orbit for every planet in the solar system excluding Earth.
 
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Go here:

http://ssd.jpl.nasa.gov/horizons.cgi

Pick the palent you want.

change the options to give heliocentric range. Pick a date range and hit generate.

The chart will give the distance from the sun for the list of dates. Look for the date where the distance stops decreasing and starts increasing. this will be the date of periapis. (If it doesn't show up in the range of dates you used, try a new range of dates.) For instance, the next periapis for Mars falls on March 9, 2011.
 

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