Your perception of the year will change after you look at this calendar that fits on one page.

Most of us discard and replace our calendars annually. Each month, we move our calendar ahead to the other page, thus if we need to know which day of the week corresponds to a given day/month combination, we have to calculate it or flip forward/backward to the corresponding month.

???If, however, you don't want to use a normal 12-month calendar, you can use this one-page calendar that not only lasts the entire year but is also exceedingly simple to modify for any/all future years.

???On any other calendar, you'd have to flip to November to see when the fourth Thursday is. This one-page calendar only requires:

? Select November from the top-right.

? Scroll down to "Thursday,"

? and then go left to the "fourth Thursday" on the monthly calendar.

??? A different method using the same one-page calendar gives the answer. Which months have "Friday the 13th" this year? Just:

??Start on the 13th, the day of the month you desire, and drag your finger right to "Friday."

?? and then move upward until you find the "Friday the 13th" months.

???That's great for 2023, but what about 2024? Even worse, what if we want to know the day-of-the-week/day/month combinations many years from now? This is where, in my opinion, the one-page calendar truly demonstrates its effectiveness. Except for the blue months in the upper-right corner of the one-page calendar, everything is the same year after year. The months also change in a consistent fashion.

???Each non-leap year has 365 days—one more than a full 52 weeks (which is 364). Since January 1, 2023 began on a Sunday and 2023 has 365 days, we immediately know that December 31, 2023 will conclude on a Sunday (which you can confirm using the one-page calendar) and that January 1, 2024 will begin on a Monday. Then, reorder the months for 2024, taking in mind that February will have 29 days in a leap year.

???Notice how the "month" placement differs in 2024 versus 2023. In 2023:

● January and October started on the same day, May on the next day.

●August began on the following one, then February, March, and November all began on the next day-of-the-week,

● June on the next, September and December on the next, and April and July one more day later.

Since 2024 is a leap year, February has 29 days, disrupting the rhythm. Month placements change to:

■January, April, and July start on the same day,

■October on the day after that, May on the day after that,

■February and August on the next day, March and November on the next day,

■June on the next day, and September and December on the day after that.

???The 2023 calendar will function in 2034, 2045, 2051, 2062, 2073, 2079, 2090, 2102, 2113, and 2119. In non-leap years that finish in "00," like 2100, the repeat time always extends to 12 years or shortens to have an "extra" 6 year repeat over that interval. 2025's calendar repeats in 2031, 2042, 2053, 2059, 2070, 2081, 2087, 2098, 2110, and 2121.2026's calendar repeats in 2037, 2043, 2054, 2065, 2071, 2082, 2093, 2099, 2105, and 2122.

???2027's calendar repeats 2026's in 2038, 2049, 2055, 2066, 2077, 2083, 2094, 2100, 2106, and 2117. For leap years, the recurrence pattern is every 28 years when not passing a non-leap year ending in "00" or 12 or 40 years when we do. 2024's calendar repeats in 2052, 2080, 2120, 2148, 2176, and 2216; 2028's in 2056, 2084, 2124, 2152, 2180, and 2220.

Source: BigThink