Kronos.py is written by Irmen de Jong.
Retrieved from:
http://www.razorvine.net/download/kronos.py

Quote from the module:
"""
    This version has been extracted from the Turbogears source repository
    and slightly changed to be completely stand-alone again.
    Also some fixes have been made to make it work on Python 2.6 (sched module changes).
    The version in Turbogears is based on the original stand-alone Kronos.
"""

It is covered by the following license.
http://www.opensource.org/licenses/mit-license.php
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    The MIT License

    Kronos.py is Copyright (c) Irmen de Jong.

    Permission is hereby granted, free of charge, to any person obtaining a copy
    of this software and associated documentation files (the "Software"), to deal
    in the Software without restriction, including without limitation the rights
    to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
    copies of the Software, and to permit persons to whom the Software is
    furnished to do so, subject to the following conditions:

    The above copyright notice and this permission notice shall be included in
    all copies or substantial portions of the Software.

    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
    THE SOFTWARE.

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