User:EPF/MTMEL Passage of Time

Chapter	Event
1	Mami's calendar has "meeting with everyone" planned for Saturday, June 9th. In real-life 21st century's first half, this date and weekday occur in 2001, 2007, 2012, 2018, 2029, 2035, 2040, and 2046. Mami is stated to be 31 years old. The rest of the Quintet is stated to be in their 30s, without specifying exact age. The chapter tagline states it's happening 17 years after "that series of events", refering to the 2011 anime. Mami is stated to be lying about having a boyfriend for the 3rd year
2	Hitomi's wedding is stated to be happening on a mid-summer day. A date on a phone calendar reads Sunday, August 5th. In real-life 21st century's first half, this date and weekday occur in 2001, 2007, 2012, 2018, 2029, 2035, 2040, and 2046. Madoka's wedding is planned for 2 months after Hitomi's. Tatsuya is stated to be 19 years old.
3	Mami says it's autumn.
4	The narration states it is a winter day. Mami states today is Sunday. Mami states that if she fails to take out her trash on time, after tomorrow, she would have to wait for two weeks until New Year for the next pickup. Kyoko says she's been working an extra part-time job since November to afford upcoming Christmas and New Year expenses.
5	Mami says a sink needs to be clean even on holidays, while cleaning it. Mami states today is a Saturday. Mami states Valentine's Day is near, with the calendar showing it as the 2nd day of the week, with no weekdays marked. Assuming it is a Tuesday, in real-life 21st century's first half, this date and weekday occur in 2006, 2012, 2017, 2023, 2034, 2040, and 2045. Madoka and Homura are shopping for Valentine's chocolate during a special sale dedicated to the holiday. Madoka states Tatsuya is still a minor (at the time the chapter was published, age of majority in Japan was 20).
6	No events that can be used to approximate the date are mentioned.
7	Mami says it's June. Mami wins a box of seasonal fruit (cherries) from a raffle that happened "a few months earlier", around the time of New Year. Mami has a sheet of paper on her fridge, with the date 6/17~22, that mentions trash. Mami reminisces upon her old part-time job of putting raisins in bread that she held when she was a student. Kyoko mentions the daycare that Yuma attends.
8	Mami states it is summer, and holidays.
9	Mami recalls watching a movie with her parents 20 years earlier. The trees are covered in leaves, and Mami wears a short skirt outdoors, with a short-sleeved shirt and no jacket. There are few clouds visible. This suggests a warm month. Mami states today is a holiday.
10	Mami states today is Friday. There is a timeskip to the next day, thus Saturday. Visiting a Purikura and noticing differences between the current iteration and the one from her youth, Mami expresses amazement on how far the civilization has come in the last 15 years. On Saturday, Mami writes today's date on a photo - 11/23. In real-life 21st century's first half, this date and weekday occur in 2002, 2013, 2019, 2024, 2030, 2041, and 2047.
11	Mami states it is winter. It is stated that the next day would be December 14th, and that the Geminid meteor shower would peak then. Given the meteor shower peaks on that date 17/20 times between 2006 and 2025, it is impossible to use this information to estimate the year. (Source)
12	Mami states that the calendar says it is spring already, but at the same time, that it's not real spring yet, as temperatures are still low. Mami states that March is almost over already. February 23rd and March 2nd are both highlighted as first days of the week. This implies it is not a leap year. When visiting her parents' graves, Mami states it has been 16 years since "then", likely referring to their deaths and her contract. Mami celebrates Higan. It is a holiday celebrated for a week, 3 days before and 3 days after the spring solstice. The spring solstice usually happens on March 20th.
13	Mami eats tangerines while laying under a kotatsu, an activity typically associated with winter, though not impossible to perform at other times.
14	Mami states she is sleepy because it's already spring. Cherry trees are in bloom. Mami grows radishes over 20 days, then leaves a basil and mint plant for a week.
15	Bare trees can be seen in the background. Nagisa states she's already an adult (at the time the chapter was published, age of majority in Japan was 20). She graduated recently, started job-hunting last year, and says she's been a productive member of society since April. She is looking forward to the summer bonus at work. Yuma states she is 5 years old, almost 6.
Extra	Trees covered in leaves can be seen in the background as Kyoko rushes to the daycare. Yuma tells Kyoko a new donut shop opened recently. Kyoko finds information online on Sweet Kreme Doughnuts Kazamino's opening, dated to June 1st. Kyoko exclaims that 400 yen is 30 minutes' worth of her work. Minimum hourly wage in Japan went above 800 yen in 2016. Another day, Kyoko and Yuma's donut shopping happens at the same time as chapter 15.
99	Leaves can be seen on trees. A message Mami sends into the company Tiscord (ティスコード) is dated to 2024/XX/XX, three days ago. Tiscord itself is a parody of Discord, a messaging service that launched in 2015 in real life.
100	Mami states it is summer. Mami sees an ad for a riddle-solving event, held from July 20th to August 2X (number X is illegible). Mami attends it on a "certain Sunday".
103	Mami uses a smartphone with a dedicated "home" button and two dark circles in the back (likely a camera and a flash), the same that she has been using since chapter 35.
104	Mami now uses a smartphone with three dark circles in the back, though the front of the phone didn't change. Homura links a website themed around mystery stories, specifically to a page with a top 10 ranking of mystery stories in 2024.