solve calendar problems/ repeatation of calendar/calendar magical number 400/ Identical years/part2
Channel: Arghyacademy
Date: 07/08/2020

In this video we can learn the concept of Identical years. Basis of Identical years. When does  the calendar of any particular year repeat? What is the significance of 11 years in identical calendars? what is the importance of 28 years in identical calendars? What is Magical Calendar Period? English Calendar. Why Gregorian calendar is better than Julian calendar? Why 400 year period is basis of Gregorian or English calendar? What are the exceptions of Leap year concept? what is concept of average year according to Gregorian or English calendar? An average year consists of 365.2425 days. An average year= 365 days, 5 Hours,49 Minutes, 12 Seconds. Any 400 year  period has 303 ordinary years ( normal years) and 97 Leap years. An average year=365 97/400 days. Concept of reducing .0025 days per year. concept of leap year in case of century year. calculations and basis of Gregorian calendar design. Role of 3 days in 400 Year period of calendar. Why do we have 303 ordinary years rather than 300 years over period of 400 years?
Why do we have only 97 leap years over the period of 400 years, if every 4th year is Leap year and has 365 days? paribhraman and Parikraman. Revolution of earth around sun. tricks involved to solve calendar problems in exams. 
music: https://www.bensound.com 

concept of first and last days of any calendar year. concept of leap day and leap year. Trick to learn the number of days in a particular month.
impact of Roman calendar on Gregorian or English calendar.
Is video me hum identical calendar ka concept seekh sakten hain.
Kitne saal ke baad koi calendar saman tarikh aur din ke sath aata hai. Jadui sankhya calendar me kya hai? Kya 11 sal ke baad calendar repeat hota hai?kya 7 saal baad calendar saman hota hai? 
Saman calendar ke liye 28 saal ka kya concept hai aur wah kyun mahattvapurn hai? 
Har 4 saal ke bad kya zaruri hai ki leap year ho?
Agar nahi to aisa kyun hai? Kabhi kabhi leap years ke beech me 8 saal ya varsh ka faisla / gap kyun hota hai? Europe me Julian calendar ko upyog karne me kyun kathinai ho rahi thi? Easter, equinoxes ka kya mahatva hai calendar me?  Easter aur equinoxes predict karne me Europe me 16th century ke pahle kya problem ho rahi thi? Julian calendar me kyu sudhar ki aawashykta thi? Julian calendar ki jagah kaun sa calendar Europe me upyog hone laga? Gregorian calendar me leap years me kya parivartan aaye? Equinoxes kab hoten hain? 
Equinoxes fall on 20th March and 23rd September. Equinoxes ka kya concept hai? Ek saal me kitni baar equinoxes hoten hain? Ek saal me 2 baar equinoxes hoten hai. Position of sun on equinoxes. Position of sun and equator on equinoxes. Aausat saal ka kya concept hai?