Embedded mcu calendar - JohnHau/mis GitHub Wiki
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https://www.geeksforgeeks.org/c-program-to-display-month-by-month-calendar-for-a-given-year/
https://www.codingunit.com/how-to-make-a-calendar-in-c
https://www.tutorialspoint.com/how-to-print-a-one-month-calendar-of-user-choice-using-for-loop-in-c
https://itsourcecode.com/free-projects/c-projects/calendar-in-c-programming-with-source-code/
https://easycodebook.com/2020/04/display-yearly-calendar-c-program/
https://codeprojectz.com/applications-and-web-projects/simple-calendar-in-c-programming-with-source-code/ https://sourcecodehero.com/calendar-in-c-programming-with-source-code/
https://gist.github.com/sohu2000000/556046/c9b99483e93ca14ef27ffc5d9b6713080a2ec32b
https://technotip.com/7105/c-program-to-find-the-day-on-01-january-using-gregorian-calendar/
https://www.timeanddate.com/calendar/?year=2099&country=22
https://www.eevblog.com/forum/other-blog-specific/microcontroller-calendar-code-in-c/
https://www.hackster.io/mvtdesign/alarm-clock-calendar-temperature-meter-with-atmega8a-fa63f1
https://www.tutorialspoint.com/print-calendar-for-a-given-year-in-cplusplus
https://stackoverflow.com/questions/13209097/how-to-calculate-the-date-after-x-days-in-c
https://www.calendar.com/blog/calendar-calculator/
https://www.geeksforgeeks.org/find-day-of-the-week-for-a-given-date/
https://stackoverflow.com/questions/6054016/c-program-to-find-day-of-week-given-date
https://www.includehelp.com/c-programs/c-program-print-weekday-of-date.aspx
https://cboard.cprogramming.com/c-programming/164130-how-get-weekday.html
https://gist.github.com/MightyPork/9be8874c03e92bdc89164f3643ffc32e
https://gist.github.com/bharathyes/b9b0f90c71ddc78d02a7
https://www.tutorialspoint.com/day-of-the-week-in-cplusplus
https://www.tutorialgateway.org/c-program-to-print-day-name-of-week/ https://javatutoring.com/c-program-to-input-week-number/
https://cplusplus.com/forum/beginner/55273/
https://cs.uwaterloo.ca/~alopez-o/math-faq/node73.html
https://aticleworld.com/c-program-to-print-day-name-of-week/
https://support.claris.com/s/article/Calculating-a-Weekday-Date-1503692919336?language=en_US
https://www.tenouk.com/cpluscodesnippet/daygivendate.html
https://www.techcrashcourse.com/2015/11/c-program-to-print-days-of-week-if-else.html
https://www.codespeedy.com/how-to-find-day-from-date-in-cpp/
http://cprogramming.language-tutorial.com/2012/01/program-to-find-day-of-given-date-in-c.html
https://www.hackerearth.com/blog/developers/how-to-find-the-day-of-a-week/
https://www.sanfoundry.com/c-program-days-in-years-weeks-days/
https://www.tutorialspoint.com/how-to-print-a-one-month-calendar-of-user-choice-using-for-loop-in-c
https://www.geeksforgeeks.org/c-program-to-display-month-by-month-calendar-for-a-given-year/
https://stackoverflow.com/questions/22519183/printing-a-calendar-month
https://www.cprogramming.com/source/calendar.c http://c.net-question.in/c-basic-programs/month-by-month-calender-for-any-year
https://www.programmingwithbasics.com/2016/04/c-program-to-print-calender-taking.html https://www.codespeedy.com/print-calendar-for-a-specific-year-in-cpp/
https://unicode-org.github.io/icu/userguide/datetime/calendar/examples.html
https://www.simplilearn.com/tutorials/how-to-find-leap-year-using-c-program
https://developpaper.com/c-language-to-achieve-a-simple-perpetual-calendar/
https://www.daniweb.com/programming/software-development/threads/437295/making-a-calendar-in-c