Provided by: cycle_0.3.1-11_all bug


       cycle - a calendar for women




       Cycle  is  a  calendar  program  for women. Given a cycle length or statistics for several
       periods, it can calculate the days until menstruation, the days of "safe" sex, the fertile
       period,  and  the days to ovulations, and define the d.o.b. (date of birth) of a child. It
       allows the user  to  write  notes  and  helps  to  supervise  the  reception  of  hormonal
       contraceptive tablets.


       The program is capable of:

        - Calculate of the days of menstruation, based on length of the cycle or on statistics of
       a period.
        - Calculate the "safe" sex days, fertile period and day to ovulations
        - Definition of D.O.B . (Date Of Birth) of a child
        - Allows to write notes
        - Helps to supervise reception of hormonal contraceptive tablets


       It uses the calendar method for the definition of fertile days. For this is  necessary  to
       determine  duration,  at least, of last six cycles. For determine the fertile days it uses
       this algoritm:

        - First day: duration of shortest cycle minus 18
        - Last day: duration of longest cycle minus 11
        - Ovulation: is considered in the middle of fertile period (Determine the exact day isn't
       possible with the calendar method)

       Date  of  a  birth  of  the  child  is counted from the beginning of last menstruation (in
       obstetrics are accepted 40 weeks). This date is corrected with the  duration  of  a  cycle
       (are  subtracted  or  added  same  number  of  days that a cycle differs from 28 days). Is
       possible check the results at: (in Russian)


       It is necessary to mark the beginning of menstruation. This is possible clicking with  the
       right button on the date and chosing "The beginning of a cycle". Similarly the mark can be
       removed. Using duration of last six cycles, the program will calculate

        - Fertile period - green cells
        - Ovulation day (the middle fertile period) - brightly green cell
        - Beginning of following menstruation - pink cells

       Cycle duration is set in options or is calculated an average of last six periods.

       To determine prospective date of a birth of the child, it is necessary first day  of  last
       cycle to mark in addition as "Pregnancy".

       Depending  on  your  purposes,  you can display only "Safe" sex days or only fertile days.
       Information about interesting day can be received clicking with left button.

       Is possible adding a note to any date using corresponding item of the  menu.  Day  with  a
       note are underlined.

       It  is necessary to note that factor of failures of calendar contraception method is about
       10 percent. This method is suitable only for women with enough regular cycle.

       If your doctor has recommended hormonal contraceptive this program will help to  supervise
       their   reception.  Closely  familiarize  with  the  instruction  applied  to  the  chosen
       preparation. Packing can contain 21 tablet (the circuit of reception 21 day on one tablet,
       then  7  days  pause)  or  28  tablets  in  this  case  all  tablets  are accepted without
       interruption every day of 28. In the program, is marked only  day  of  reception  of  each
       first tablet of packing.

       NOTE: This program is not a reliable contraceptive method. It does neither help to prevent
       sexual transmision diseases like AIDS. It is just an electronic means of keeping track  of
       some  of  your medical data and extract some statistical conclusions from them. You cannot
       consider this program as a substitute for your gynecologist in any way.


              This is the directory where cycle stores the data.


       cycle was written by Oleg S. Gints.

       This manual page was written for Debian by Miriam Ruiz <>.


       You can find cycle's home page at:

       More     information      about      calendar      method      are      available      at: (in Russian)