該軟體計算準確的日期和時間的春分，冬至和塞爾特人跨季度天（Imbolc，貝爾塔內，盧格納薩德和薩姆海恩）。 跨季度的日子是春分和冬至之間的中間天。 例如，Imbolc 位於北部冬至和北部春分（即北方春分）之間，而貝爾坦位於北部春分和北部夏至之間的中間。當我們試圖更確切地定義跨季度天數時，我們發現有兩種解釋，因此有兩種計算方法，它們給出的結果略有不同。這兩種方法稱為「平均太陽」方法和「真實太陽」 方法。平均太陽方法假定（錯誤地）地球在圍繞太陽的圓形軌道上以恆定速度移動。真正的太陽方法根據地球到達其軌道中該點的時間計算跨季度日，該時間在空間（幾何上）正好位於冬至（或春分）的位置與隨後的春分（或冬至）之間的中間。
版本歷史記錄
- 版本 6.17 發佈於 2019-12-23
更改為試用版 - 版本 5.42 發佈於 2018-02-26
為 Windows 10 相容性重新編譯 - 版本 5.22 發佈於 2015-12-25
放寬試用版限制 - 版本 3.33 發佈於 2009-09-11
維護發佈
軟體細節
- 軟體分類： 首頁 + 愛好 > 天文學
- 發佈者： Hermetic Systems
- 軟體性質： 免費試用
- 價格： $9.95
- 版本： 6.17
- 作業系統： windows
終端使用者許可協定
License Terms Hermetic Systems is the business name of Peter Meyer, [email protected], the developer of this software, and the owner and maintainer of the Hermetic Systems website at hermetic.ch. The Equinoxes, Solstices and Cross-Quarter Days software ("the Software") consists of the executable file and the other files installed by the installation program eqsol_setup.exe obtainable from the Hermetic Systems website. The Software is protected by copyright, which is owned by Hermetic Systems. The Software may be downloaded from the Hermetic Systems website or another authorized download site solely for the purpose of its evaluation with regard to the purchase of a user license. Neither the installation program nor any work derived from it may be distributed further by any means (including via CD or the web) without the permission of the copyright holder. All intellectual property rights related to the Software are owned by Hermetic Systems. You may not rent or lease the Software. You may not modify, translate, reverse engineer, decompile or disassemble the Software or any part thereof or otherwise attempt to derive source code or create derivative works therefrom. You may not remove, alter or destroy any proprietary, trademark or copyright markings or notices contained within the Software. You may not sell or offer for sale any derivative work. Any rights not explicitly granted by Hermetic Systems are reserved. In return for a license fee paid to Hermetic Systems or to one of its authorized representatives or resellers you are granted a license to use the Software in its fully-functional form and you are provided with activation keys for each installation of the Software as follows: (A) If you are a natural person then you receive a single-user license and this entitles you to install, activate and use the Software on a reasonable number of personal computers (e.g., a laptop and a desktop) in your private household or office. (B) If you are an entity other than a natural person (e.g., a corporation) then you are required to purchase a number of single-user licenses equal to the maximum number of persons who will be using the software at any one time. The function of an activation key is to remove any temporal or functional limitations on a particular installation of the Software. A separate activation key is required for each installation (in other words, an activation key works only on a particular computer). In the event that a later version of the software is released, you may update an installation at no charge by downloading and installing the new version. If you change your computer (or make a major hardware modification) you may need to obtain a new activation key. This can be obtained in the same way as before (and at no charge), provided that, in the opinion of Hermetic Systems, the number and frequency of such new activation keys is not unreasonably excessive. Installation of the Software constitutes an agreement that the Software is provided "as is", without any warranties or guarantees. Hermetic Systems makes every effort to ensure that the software is error-free and performs as stated in the online user manual, but does not guarantee this. You assume responsibility for selecting the Software and using it for your intended purposes. In no event shall Hermetic Systems, its resellers or distributors of the Software be liable for any any damages whatsoever arising out of use or inability to use the Software, even if advised of the possibiity of such damages.