Calculating ovulation time is crucial for couples trying to conceive. For women aged 35 expecting a boy, the process remains the same as for any other woman. The most common method is tracking menstrual cycles and using an ovulation calculator or app. Additionally, monitoring basal body temperature, cervical mucus changes, and using ovulation predictor kits can help pinpoint the fertile window. Consulting with a healthcare professional or fertility specialist can provide further guidance tailored to individual circumstances.