“We’re in the midst of a reckoning — where survivors are joining together and shining light into the darkness…so others can find their way out and perpetrators can no longer hide.”

~Tracy DeTomasi, Callisto CEO

What is this event?

The Day of Reckoning (April 24th) is a day of support and collective action led by Callisto - a national nonprofit leading the fight to end serial sexual assault…one match at a time. This event is designed to support awareness, usage, and expansion of Callisto's revolutionary Matching System, which protects and empowers survivors of sexual harm, while increasing the likelihood that serial perpetrators will be identified and held accountable.


What is Callisto?

Callisto is a national nonprofit that uses cutting-edge technology to tackle serial sexual assault. Our Matching System is the first of its kind encrypted tool that enables campus survivors to safely and securely find out if their perpetrator has harmed others…without requiring them to report or go public. Survivors who match in our system (by entering information about the same perpetrator) can then meet with a confidential advocate to explore their options. By putting control back into survivors’ hands, protecting their privacy, and helping them pursue justice together (if that’s what they want), Callisto gives survivors something powerful and new — an opportunity to regain control without risking greater harm.

Who can use Callisto?

Currently, those who have experienced any kind of sexual harm (anywhere, at any time, and by anyone) and have a .edu email from a U.S. college can use Callisto. This includes students, staff, faculty, and some alumni. But we recognize that this is not enough and are working tirelessly to expand. (If you want to help make that a reality, you’re in the right place!)


What is the purpose of this event? 

  • To increase the number of survivors who enter into our Matching System, improving the chances that those who enter(ed) will find a match

  • To help spread the word, so more survivors with access will know Callisto exists

  • To increase funding in order to expand access to our technology to survivors beyond college campuses

Who should participate?

  • Survivors with a .edu email who want to find out if their perpetrator has harmed others, whether or not they have (or plan to) file a formal report

  • Survivors who wish Callisto existed when they were in college

  • Survivors who can’t use Callisto (yet), but want to be able to…one day

  • Allies and advocates who believe survivors deserve protection, support, and safe options

  • Everyone who is tired of hearing people ask, “Why don’t victims report?”

  • Everyone who is infuriated by how survivors who do report are so frequently failed and retraumatized by our current systems 

  • Everyone who is outraged that, while most perpetrators are repeat offenders, few ever face accountability

How can I participate?

  • If you are a survivor with access (a .edu email address) you can join us by entering into Matching on April 24th. While technically you can enter any day, doing so on the Day of Reckoning is an opportunity to feel increased solidarity and support. Our team will be available with questions throughout the day and leading up to the event. And entering on a day when so many others across the country will also be entering increases the likelihood of finding a match…sooner. You are not alone. And whether you decide to enter on April 24th, before, after, or never…we support you!

  • If you are a friend or loved one of a survivor who wants to enter into Matching on 4/24, you can offer additional support on this day. This could include helping them find the social handles (or other unique identifiers) of their perpetrator, as this is often one of the more emotionally challenging parts of the process.

  • If you are an ally or activist or anyone who believes that more people should know about (and have access to) Callisto, you can participate by spreading the word about this event or making a donation to help us expand access beyond college campuses.

Day of Reckoning

Will you join us?

If you want to join us for the Day of Reckoning, let us know why this event is important to you and how you’d like to participate below. Make sure to include your email if you’d like to receive reminders, updates, sample social media posts, and more! (If not, feel free to leave the email section blank and submit your responses anonymously.)