This package contains sample Web interface for CHRONOS. The following files are included: chronos.pl script that implements interface; must reside under cgi-bin directory on the server; mpltime.html start HTML page that re-redirect client to the script; may reside anywhere in the HTML tree on the server; chronos.gif background GIF; may reside anywhere in the HTML tree on the server; chronos_ug.html user's guide; may reside anywhere in the HTML tree on the server; mpltime/ directory containing CHRONOS executable (chronos), setup file for MPL (chronos.mpl) and current MPL SPICE kernels: naif0007.tls -- generic LSK pck00006.tpc -- generic PCK MPL_SCLKSCET.00015.tsc -- latest SCLK de405s.bsp -- generic planet ephem. SPK mpl_surf_v2.bsp -- nominal landing site SPK The first few lines in chronos.pl contains pointer URLs for the script itself, User's guide and background GIF. These URLs must be updated to point to actual locations of the files on server. CHRONOS setup file for MPL (mpltime/chronos.mpl) must be updated to contain absolute paths to the kernels files. Kernel files MUST be updated as soon as new version are release. New versions are distributed though anonymous FTP from naif.jpl.nasa.gov, directories: pub/naif/MPL/kernels/lsk -- LSK files pub/naif/MPL/kernels/sclk -- SCLK files pub/naif/MPL/kernels/pck -- PCK files pub/naif/MPL/kernels/spk -- landing site SPK file Contact Boris Semenov, NAIF/JPL (Boris.Semenov@jpl.nasa.gov, (818)-354-8136) with any questions regarding this package.