c=68 for([,b]in['\xa6\x91\xb0\xa1','\x12!1\x12@1\x11 ','PA`ApAP\x801\x80Bp\x80Q\x90a\x90a\x90a\x80Q\x80Ap1`!P\x11@1'][new Date%3])print(String.fromCharCode(c+=(b=b.charCodeAt())%8)+(b>>4))
Note that non-ascii characters in the above source code will be escaped (such as \x9f).