The origins of lambaste are somewhat uncertain, but the word was most likely formed by combining the verbs lam and baste, both of which mean to beat severely. (Incidentally, lambaste can also be spelled lambast, despite the modern spelling of the verb baste.) Some other synonyms of lambaste include pummel, thrash, and pound.
According to the Wikipedia article on Fahrenheit: Fahrenheit remains the official scale for the following countries: the Bahamas, Belize, the Cayman Islands, Palau and the United States and associated territories (Puerto Rico, Guam and the U.S. Virgin Islands). Canada retains it as a supplementary scale that can be used alongside Celsius.
Most of the United States and Canada observe DST on the same dates. But of course, there are exceptions. Hawaii and Arizona are the two U.S. states that don't observe daylight saving time, though Navajo Nation, in northeastern Arizona, does follow DST, according to NASA.