No century begins with a Tuesday, Thursday, or Sunday

Proof: In 400 years there are 97 leap and 303 non-leap: 400x365+97=146097 days, which is divisible by 7 - everything repeats after 400 years (G.C.)! Since
1/1/2000-Saturday
1/1/2100-Friday
1/1/2200-Wednesday
1/1/2300-Monday https://t.co/f6pVDu39EH