Cos Calendar 2025-26. Grounded by tradition, soaring to new beginnings. Holidays and observances click the link here:
![Cos Calendar 2025-26](https://tse1.mm.bing.net/th?q=Cos%20Calendar%202025-26&w=1280&h=720&c=5&rs=1&p=0)
Visit our main calendar page for printable versions of school calendars. The school year calendar has 169 instructional days and more than 1044 hours.