The Bully Mnemonic & Calendar Variations

Julian Years & Gregorian Years

Initial Calculations

The Bully Mnemonic reminds us that there are approximately 31556928 in a tropical year:

Failed to parse (syntax error): {\displaystyle 1 \, Tropical \, Year \approx ({\color{Red} 1} 0 {\color{Red} 33} 0 - 0. {\color{Red} 4} 0) \times {\color{Red} 3} 0 {\color{Red} 55} = 31556928 sec \approx }{1 \, Second} }

There are 86400 seconds in a day:

$${1\,Day}={24\,hours\times {\frac {60\,minutes}{1\,hour}}\times {\frac {60\,seconds}{1\,minute}}}=86400\,seconds$$

The number of seconds in a 365 day year is:

$${365\,Day}={365\times 86400\,seconds}=31536000\,seconds$$

The number of seconds in a 366 day year is:

$${366\,Day}={366\times 86400\,seconds}=31622400\,seconds$$