The inventor of Forever Calendar is Md. Nazmul Kabir. He researched about Invent a Forever Calendar, which will start from 1 AC (After Christ) to forever. Anybody can find BC (Before Christ) Date from my printed forever calendar easily. I started to invent a forever calendar from 1987 to 2021. After researching I can stand to publish a Forever Calendar. But somehow I find some error in this published calendar. Finally, I furnish a perfect Forever Calendar which will be a permanent nature, if not create any change in the regular Calendar from time to time. Our Perpetual Calendar is very useful to everybody. Anyone can easily find out the desired year calendar from our perpetual calendar. To know more about the invention please visit my blog post at: https://ksharing.info/calendar-to-forever-calendar/