13 Month Fixed Calendar

13 months, 28 days, every date same day.

App info

Version :

2.2.3

Category :

Productivity

Update :

May 13, 2025

Installs :

5,763

Developer :

erkantr

Content Rating :

Everyone

Get it on :

Download APK

App description

Android App Analysis and Review: 13 Month Fixed Calendar, Developed by erkantr. Listed in Productivity Category. Current Version Is 2.2.3, Updated On 13/05/2025 . According to users reviews on Google Play: 13 Month Fixed Calendar. Achieved Over 6 thousand Installs. 13 Month Fixed Calendar Currently Has 59 Reviews, Average Rating 2.6 Stars

The International Fixed Calendar is a calendar system where every year aligns with the same days of the week and dates, ensuring consistency in weekly patterns. It was first proposed by Moses B. Cotsworth in 1902. This calendar divides the year into 13 equal-sized months, each consisting of 28 days, resulting in a total of 364 days. Leap years are calculated similarly to the Gregorian calendar, with an additional day added every four years. However, in the International Fixed Calendar, the extra day is inserted between June 28 and July 1, known as "Sol," effectively creating a 365-day leap year.

While the month names align with those of the Gregorian calendar, an extra month called "Sol" is inserted between June and July. This arrangement starts each year on a Sunday and ends on a Saturday, ensuring that the first day of each month falls on a Sunday and the last day on a Saturday. This consistency aids in planning and daily routines.

The International Fixed Calendar enhances calendar consistency by ensuring that the same dates align with the same weekdays each year.

We are currently offering version 2.2.3. This is our latest, most optimized version. It is suitable for many different devices. Free download directly apk from the Google Play Store or other versions we're hosting. Moreover, you can download without registration and no login required.

We have more than 2000+ available devices for Samsung, Xiaomi, Huawei, Oppo, Vivo, Motorola, LG, Google, OnePlus, Sony, Tablet ... with so many options, it’s easy for you to choose games or software that fit your device.

It can come in handy if there are any country restrictions or any restrictions from the side of your device on the Google App Store.

What's New

## Version 2.2.3

This version includes significant improvements aimed at enhancing the app’s core functionality and user experience.

- User interface updated.
- Fixed issues related to Day of the Year and Leap Day.
- Settings screen added.
- Added Dark Mode and custom theme color options.
- Added info screen explaining the 13-month calendar and its history.
- Added support for German, French, Spanish, Portuguese, Polish, Italian, Russian, Chinese, and Arabic languages.

Rate and review on Google Play store

2.6

59 total

5 19.3

4 19.3

3 12.3

2 5.3

1 43.9

Total number of installs (*estimated)

Estimation of total number of installs on Google Play, Approximated from number of ratings and install bounds achieved on Google Play.

Recent Comments

RICLEY75

Page looks good but 7,14,21,28 are missing in every row on every month untill I turn my phone to view in horizontal view then the number come back, but also it's not on the right date and the day not highlighted on which actual day it is and more than one month has the same day highlighted, what's what, please fix I really like this concept, and your is the only of its type. It would be great to have a settings menu to change basics like fit on phone screen

Victor Balderas

I like the 13th month concept. You are ahead a few days. Writing this review, and currently the app says it's on day 21 of April. When it would actually be on the day sixteen. Yes I did the comparison with the Gregorian calendar and traced back from February 2026 the following year to come, the month is a perfect alignment with the days matching perfectly. Aside from other comments editing dates and setting reminders would be an excellent edition. Keep it up! Looking forward to new improvements

Lovely Stargazer

I was hoping for something more.. there are no options of any kind, no opening the individual months, no adding events or anything else that a normal calendar app would have. I was hoping for a fully functional calendar app that happened to be based on the 13 month fixed calendar, and what I got was an app with one screen that just shows the fixed calendar and highlights what day it is currently.

Rocco

It's a somewhat basic app which displays the 13 months and the current date is highlighted. I wish the NWO considers adopting this more intuitive calendar instead of the bizarre Gregorian disaster which I've never memorized the lame jingle to remember days in each month.

M

Just do an image search and you have all this app gives you. Literally can't do anything, including zooming in on a certain month. Weird to make an image into an app. I don't trust it

Tamara Rogers (Calgary)

I appreciate that it shows Sol, but there is zero explanation as to why it's not showing todays date. It would be nice to zoom in on a month and have the moon phases showing.

Pro Banda

Awesome. But in setting there needs needs to be option to change the starting day to New year solar eclipse and New moon variation for starting of a month. 🙏