Each individual Version is closed at a given point in time, and remains then unchanged on the publicly accessible website until it is closed and archived in the corresponding Ephemeris.
Here is a list of the versions as available until preset:
| Version 0 | the Public website, 2003-2008 |
| Version 1 | opened April 23, 2008 (current version) |
| Version 1a | on development |
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