Sir, please tell me about safe periods calculation to avoid pregnancy. How can calculate next Tym of period.

Question

Safe Period Calculator : Hypothesis. The menstrual cycle, is commonly divided into three phases: the follicular phase (pre-ovulatory phase), ovulation, and the luteal phase (post-ovulatory phase). ... A woman gets pregnant around the days when ovulation occurs.
Calculate Your Safeperiod
Safe period calculator helps you to find out the safe days that you can make love without fear. In natural way you can avoid pregnancy by remembering some dates. By simply giving your last period date and longest and shortest period cycle, SAFE PERIOD CALCULATOR finds out the safe and unsafe dates of your menstrual cycle.
To calculate safe and unsafe dates
If a women's menstrual cycle varies from 26days to 31days cycle, The shortest cycle [26days] minus18days=8th day. The longest cycle [31days] minus 10days=21st day Thus, 8th to 21st day of each cycle counting from first day of menstrual period is considered as fertile period. That is UNSAFE PERIOD.Period other than this fertile period in a menstrual cycle is considered as SAFE PERIOD.

Potnuru Srinivaasa Sudhakar · Accepted Answer

Safe Period Calculator : Hypothesis. The menstrual cycle, is commonly divided into three phases: the follicular phase (pre-ovulatory phase), ovulation, and the luteal phase (post-ovulatory phase). ... A woman gets pregnant around the days when ovulation occurs.
Calculate Your Safeperiod
Safe period calculator helps you to find out the safe days that you can make love without fear. In natural way you can avoid pregnancy by remembering some dates. By simply giving your last period date and longest and shortest period cycle, SAFE PERIOD CALCULATOR finds out the safe and unsafe dates of your menstrual cycle.
To calculate safe and unsafe dates
If a women's menstrual cycle varies from 26days to 31days cycle, The shortest cycle [26days] minus18days=8th day. The longest cycle [31days] minus 10days=21st day Thus, 8th to 21st day of each cycle counting from first day of menstrual period is considered as fertile period. That is UNSAFE PERIOD.Period other than this fertile period in a menstrual cycle is considered as SAFE PERIOD.