Free/Busy Calendar

There's a good chance you're here for my free/busy calendar to setup a meeting. Unfortunately I have 4+ calendars (personal, Lakebed.io, Applicant.Fit, and work). I've not found any solution that shares free/busy for multiple calendars publicly. So, I wrote a cron job that pulls in the data from the disparate sources (Google, Zoho, and O365), I then use an Open Source, JQuery library to parse the .ics files and display in a calendar format; as seen below. Review the calendar, pick a few times when we're both free, and send me a meeting invite. I now have a 5th, public calendar displayed in orange that shows event details. The reason for yet another calendar is explained in this post.