Astro Birth Control
Natural contraception and child planning
by lunar phases


   The Lunar Phase

   Your personal

   How to order





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Terms of Trade
Institute for Astrological Mathematics (IAM)
Christina Limpach-Bürkner
Buchwaldstr. 19, D-63303 Dreieich, Germany

General scope

All deliveries and services of the Institute for Astrological Mathematics (hereafter called "IAM") to our clients (hereafter called "Client") are subject to the binding legal terms set forth below ("Terms").

Scope of delivery and Services

The IAM calculates and prepares calendars based on the concept of natural family planning using the so-called Lunar Phase Method. We emphasize the exclusion of any guarantees and liabilities (see under "Exclusion of guarantees and liabilities"). We follow the calculation methods layed out by the advocates of the method, which have not been verified by us regarding their correctness, efficacy and scientific foundation. The calendars may be ordered by mail using a signed order form (see under "Beginning  of contract").

The scope of delivery comprises: a calendar for contraception or child planning containing the marked individual lunar phases for one year beginning from either order month or desired start date, print-out of computer calculation, if pre-selection of child's sex was desired additionally a calculation print-out of the corresponding days and entries in the calendar for those days, detailled instructions for using the calendar. Additional information by phone or email, please see under "Enquiries and phone service".

Beginning of contract and calendar fees

A legally binding contract is brought into existence between a Client and IAM as soon as the IAM has received a completely filled-in and signed order form together with the pre-paid fee.

The prepayment may be done in cash or by cheque drawable on a German bank. For the current fees for  contraception and planning calendars please refer to the order form. The prices on the order form include the VAT for Germany.

The order form must contain the following data: name and address, date + time + location of birth, desired type of calendar, signature with date.

Delivery costs

There are no delivery costs. 

Legal information on order cancellation

Right of order cancellation

You may cancel your order within a two weeks grace period by a text document (e.g. letter, fax, email) without having to declare any reasons. The grace period begins earliest with getting knowledge of this legal information. To claim the cancellation right it is sufficient to post or email the cancellation in time.
(important: see  "special information" further down!)

Send the cancellation notice to:

Institute for Astrological Mathematics
Christina Limpach-Bürkner, Buchwaldstr. 19, D-63303 Dreieich, Germany
Email:, Tel: +49 (0)6103 967819

Results of cancellation

In case of a legally valid cancellation both partners have to resend any received goods or values and eventual usages made thereof. If you cannot return the received goods completely or partially or in a detiorated condition you have to compensate for this financially. You can avoid the compensation by not using the delivered goods as an owner and refrain from all actions which would lessen the value of those goods. Goods deliverable by mail service (parcels) may be returned at our costs and danger. If returning a delivery under € 40.- you have to pay the return costs, if the delivered goods correspond to the ordered items. Goods not deliverable by mail service will be collected at your site.

Special information

Because in calculating and manufacturing a calendar as a personal service to you, a right for cancellation is only possible through checking the box on the order form, stating that you want to have a 14-days grace period for order cancellation before we start production of the calendar. Your right for cancellation expires prematurely if IAM  has started executing the service with your explicit consent before the end of the grace period or if you initiated the execution yourself (for example by not marking the checkbox for the 14-days cancellation period).

Dreieich, 11.6.2004

End of legal information for order cancellation

Exclusion of guarantees and liabilities

The IAM will undertake to provide calculations for Clients on the strict understanding that this data is for educational and guide purposes only and is in no way to be considered as medical advice or recommendation for application. Each Client uses the method and instructions at its own risk. The IAM does not offer or imply any guarantees, especially not for successful  contraception, conception or pregnancy. We would like to point out that also a proper application of the calculations and the calendar does not guarantee a certain success or the prevention of a certain success. Especially we cannot guarantee or take liablity for the correctness and efficacy of the lunar phase method and the scientific research on which the method is based.
Any liabilities for consequences which might result or not result from using our services for certain purposes, especially an unwanted pregnancy, are excluded. Exceptions from the before mentioned limited or excluded liabilties are those consequences which IAM deliberately or extremely carelessly brought about.


The Client has the right to return the calendar, if through the IAM's fault the preparation of the calendar was based on incorrect data or any errors occurred in preparing the calendar. In this case the calendar will be recalculated,  produced correctly and sent to the Client again. Alternatively the fee can be refunded.

If incorrect birth data was entered in the order form there is no right to return the calendar.

Enquiries and phone service

Before ordering you are welcome to enquire for additional information by email or phone. Also we can give further instructions by phone as to the proper technical usage of the calendars. The IAM is not offering any counselling related to medical or gynaecological topics.


The Client's personal data transferred to us will be stored electronically for being able to process the order, are kept strictly private and will not be passed on to any other organisation or person.


For all contracts with the IAM based on these Terms of Trade and all claims arising from these contracts you hereby consent to the exclusive jurisdiction and venue of courts in the Federal Republic of Germany .

If any provision of these Terms or the application thereof to any Member or circumstances shall to any extent be held to be invalid or unenforceable, the remainder of these Terms, or the application of such provisions to persons or circumstances as to which it is not held to be invalid or unenforceable, shall not be affected thereby, and each provision shall be valid and be enforced to the fullest extent permitted by law. No waiver of these Terms will be valid, except in the event that the waiver is in writing and signed by an authority of IAM.

Christina Limpach-Bürkner
Dreieich, June 16, 2004

Institute for Astrological Mathematics    -   Dreieich / Germany