时区数据
下图显示了公共时区数据库（2009r 版）中包含的大约 400 个时区。
关于时区和夏令时的当前和历史信息均来自
公共领域数据库 TZ，请参阅维基百科 TZ 数据库，尤其是 1970 年以后的数据。
来自由 Astro Communications Inc. 出版的 Thomas G. Shanks 所著的两本书《美国地图集》（1996 年）和
《国际地图集，第六版》（2006 年），仅适用于 1970 年之前的数据。这两本书是了解加拿大和美国各州在全国标准化之前不定期使用夏令时的重要来源。
时区信息来自 Gabriel 所著的《Traité de l'heure dans le monde》（1990 年）；Guy Mayeres 所著的《L'astrologie confrontée aux régimes des zone occupied en France de 1914 à 1945》（2006 年）；Zaitsev A.、Kutalev D. 等所著的《Новый справочник астролога. Координаты городов и временные поправки》（新占星家参考书：城市坐标和临时目的地）(Coordinates of urban and time Corrections)（2015 年）。
Alois Treindl 自 1980 年 Astrodienst 成立以来进行的研究和数据收集，其中一些数据也已收录到公共 TZ 数据库中。最重要的研究原始资料是报纸档案、旧机场数据和火车时刻表。
Rules for using the service
The Astrodienst server is a reference source for private use by
astrologers. It is not allowed to build a
commercial service based on the resources of this
server, or to extract the information in this server
systematically for data capture.
If our system detects an excessive number of requests from
the same source within a certain period of time,
it will automatically refuse further access.
No Atlas Access via Software
The Astrodienst server is intended to be used by human
individuals, who use an Internet browser
interactively to connect
to our server and type their queries by hand. Automatic access
by query-generating software is not acceptable and will be
considered illegal. Should we be able to identify that from some
connections automatic queries are arriving, we block the
Internet address groups which are the source of such queries.
Some developers
of astrological software may have the plan to build
automatic access to this server into their programs. This would
allow them to offer complete city and timezone information in their
software without having to make any effort, just by sending a few
URLs over the Internet. Currently they must license a database
from companies like ACS if they want to include this information in
their software programs.
We as the providers of this atlas service have no intention to
damage the business of ACS and others who offer city and timezone
databases for sale. We find it important that they can continue
in their commercial activities. Therefore we
deny permission to
software developers to program automatic access to our database
into their software.