Upon looking at the more precise business day definition for right of rescission, I notice this:

(6) Business day means a day on which the creditor's offices are open to the public for carrying on substantially all of its business functions. However, for purposes of rescission under §§1026.15 and 1026.23, and for purposes of §§1026.19(a)(1)(ii), 1026.19(a)(2), 1026.31, and 1026.46(d)(4), the term means all calendar days except Sundays and the legal public holidays specified in 5 U.S.C. 6103(a), such as New Year's Day, the Birthday of Martin Luther King, Jr., Washington's Birthday, Memorial Day, Independence Day, Labor Day, Columbus Day, Veterans Day, Thanksgiving Day, and Christmas Day.

Does Washington's Birthday mean President's day?

Yes!

Note from the list of federal holidays published by the Office of Personnel Management:

** This holiday is designated as "Washington’s Birthday" in section 6103(a) of title 5 of the United States Code, which is the law that specifies holidays for Federal employees. Though other institutions such as state and local governments and private businesses may use other names, it is our policy to always refer to holidays by the names designated in the law.

George's birthday is the 22nd and Abe's birthday is the 12th. So we honor 'em both. I know that's not your question.....just throwing in some trivia. Actually George was born on the 11th according to the Julian calendar then in use. But then England and the colonies adopted the Gregorian calendar which changed it to the 22nd. The Julian calendar served to throw off the equinox by about 3 days every four centuries.