262 in leap years that begin on Monday, Tuesday, Wednesday or Thursday
261 in leap years that begin on Sunday or Friday and regular years that begin on any weekday
260 in any year that begins on a Saturday and regular years that begin on Sunday
The length of a non-leap year is 52 weeks and 1 day, so after 52 weeks of the year have passed, that one extra day will be the same day of the week as the 1st day of the year. Therefore, a non-leap year has 53 of the weekday on which Jan. 1 and Dec. 31 fall and 52 of every other weekday.
I'm not sure I understand the question, but every day of every year is on a different day of the week the following year. Usually it's the next weekday, but it's the second weekday after the weekday of the original date if there is a leap year day during that year in between.
Wednesday
The year, 2004, was a leap year, with 29 days in February. 2010 wasn't a leap year and only had 28 days in February.
52 weeks in one year .
One way to determine the day of week based on the date is to use Zeller's congruence. For the Gregorian calendar... int dayofweek (int month, int day, int year) { int weekday; if (month < 3) month += 12; weekday = day; weekday += int ((month + 1) * 26 / 10); weekday += year; weekday += int (year / 4); weekday += 6 * int (year / 100); weekday += int (year / 400); weekday %= 7; return weekday; /* 0 = Sunday, ..., 6 = Saturday */ }
around 250,000 a year
The length of most 12-year periods is 626 weeks and one day. It's that one day that puts a certain date on the subsequent weekday after twelve years, just as a certain date is on the subsequent weekday after one regular year, the length of which is 52 weeks and one day. (If there's a leap year day during the intervening year, the date will fall a weekday later.) 12-year periods that include the year 2100 will be exactly 626 weeks long, since 2100 is not a leap year, so the weekday will be the same after a twelve-year period that includes 2100. (2100 will be only the fourth year that is different from the Julian calendar since the world started switching to the Gregorian calendar in 1582; the other years that were different were 1700, 1800 and 1900.)
September and December of the same year have the same calendar except that September has 30 days and December has 31. The last 31-day month before December of a regular year that has the same date to weekday relationships is July of the previous year. The last 31-day month before December of a leap year that has the same date to weekday relationships is October of the previous year. The first 31-day month after December of the year before a leap year with the same date to weekday relationships is the following March. The first 31-day month after December of the second year before a leap year with the same date to weekday relationships is August of the leap year. The first 31-day month after December of a leap year or the year after a leap year with the same date to weekday relationships is March of the second year after.
No.
August can start on any weekday or any weekend day, so there is no single answer to the question without specifying a particular year.
On an average weekday approximately 5 million people ride the NYC Subway. On the weekend the amount is less than half of the weekday ridership.
The 19th of September in the year 1963 was a Thursday.
In every regular year, every date after the 28th of February falls on the weekday after the weekday on which it fell the previous year, but in every leap year, every date after the 29th of February skips a weekday and falls on the second weekday after the weekday on which it fell the previous year.Listed here are the weekdays on which Christmas falls from 2010 through 2030 with leap years indicated with an *:2010 : Saturday2011 : Sunday2012* : Tuesday2013 : Wednesday2014 : Thursday2015 : Friday2016* : Sunday2017 : Monday2018 : Tuesday2019 : Wednesday2020* : Friday2021 : Saturday2022 : Sunday2023 : Monday2024* : Wednesday2025 : Thursday2026 : Friday2027 : Saturday2028* : Monday2029 : Tuesday2030 : Wednesday
Every twenty-year period that begins after the 28th of February 1900 and before the 29th of February 2080 includes five leap year days. Each calendar date advances one weekday for every year plus an additional weekday for every leap year day, because every regular year consists of 52 weeks plus one day, and every leap year consists of 52 weeks plus two days. So for every date during the period specified in the first sentence, the weekday twenty years later will be the 25th weekday after the original date (20 for the number of years plus 5 for the number of leap year days equals 25).For every Saturday after the 29th of February 2080 and before the 1st of March 2100, the weekday twenty years later is Tuesday, because every twenty-year period that begins between those dates includes four leap year days (2100 is not a leap year).
There were 261 weekdays in 2012.
About 798,500.