The most important way US elections are rigged is not voter disenfranchisement, touch screen voting machines or tampered software in ballot scanners, but media manipulation of public consciousness about the candidates.
30 days has September, April, June and November. All the rest have 31 Except February alone, Which has 28 days clear And 29 in each leap year. Or you can use the knuckle method: A knuckle is 31 days, and in between each knuckle it isn't. And where you hands meet, the two knuckles are July, August, which both have 31 days. (Note: the last knuckle isn't used). Example: October is on a knuckles, so it has 31 days.
Four and a few days. Since each week has 7 days but a month has 28 (February), 30 (April, June, September and November) and 31 (January, March, May, July, August, October and December) days. Even the whole year has 365 days that is 52 weeks and a day. A leap year has one more day, so 52 weeks and 2 days.