MikvahCalendar.com is the Rabbinically Approved Mikvah Calendar which automatically calculates all important dates and times according to your custom. Ashkenazic, Sephardic, and Chabad customs. SMS & Email reminders. Developed by MIT graduates, MikvahCalendar.com is a website, Android App, and IPhone App which calculates and reminds you of all of your Mikvah dates and times. MikvahCalendar.com calculates with extreme precision all of your upcoming vesatot, Mikvah night, earliest Hefsek Taharah, and estimated ovluation. Features: •Times & Dates Automatically Calculated & Explained •Ashkenazic, Sefardic, &Chabad Customs •Email & SMS Reminders •Kavuah Pattern Calculations •Ask the Rabbi •Estimated Ovulation Reminder •Print friendly format for personal records •Traveling to Cities in Different Time Zones •International Travel •Daylight Savings Time •Leap years •A woman who had a successful Hefsek Tahara but then an unsuccessful Internal Examination •Birth/Miscarriages •English, Hebrew, French, Spanish, Russian *Most advanced Kavuah system in the world MikvahCalendar.com has been correct and relied upon since 2009. It calculates the Vesatot and Onot according to your custom. MikvahCalendar.com makes keeping the calendar a breeze.