What's the latest regular decision deadline for college apps?

I'm trying to organize my college applications and want to know the latest regular decision deadline out there. I know deadlines can vary, so any info would be super helpful, especially if it's for major universities.

Regular decision deadlines for college applications can indeed vary widely, spanning from early January to later in the spring. Most of the major universities have their deadlines in early January (around January 1st or 2nd), including many Ivy League institutions and large state universities.

However, there are colleges with deadlines extending into late March or April, or even some that work on a rolling admissions basis, where they consider applications until all spots are filled. For instance, Michigan State University has a regular decision deadline of April 1st. For universities with rolling admissions, such as Penn State, they usually start to review applications in the fall and continue until all spaces are filled.

It's important to remember that applying earlier is often beneficial, especially because financial aid and housing are often distributed on a first-come, first-served basis. Late deadlines should ideally be used as a backup plan and not the main strategy. Keep also in mind that applying well in advance of the deadline can demonstrate your interest and commitment to the institution. Always double-check the specific dates for each school on their official admissions websites, as these can sometimes change from year to year.