Calendar is a conventional time reckoning, accepted in the particular culture. It divides time into periods of repetitive cycles, associated with the cycles of nature. The name comes from the Roman word “calends“, other sources give different origin of the word – Latin “callendarium“.
Calendars can be divided into different types, depending on:
1. a method of determining the length of the year in relation to the length and the number of months.
This is the most popular classification criterion.- Solar calendars, for example: Christian calendars (Gregorian and Julian), Mayan calendar, Aztec calendar, Iranian calendar, French Republican calendar, Swedish calendar
– Lunar calendars, for example: Ancient Greek calendar, Roman calendar, Babylonian calendar, Jewish calendar, Muslim calendar,
– Lunisolar calendars, for example: Egyptian calendar, Indian calendars, Chinese calendar
2. a method for determining the beginning of the reckoning of time (era):
– Linear – the years are counted continuously from a historical event, for example since the birth of Christ (Gregorian calendar), the escape of Muhammad from Mecca to Medina (Muslim calendar)
– Cyclic – where years are in repeated cycles, for example in 12-year or 60-year cycle (eg. Chinese calendar, Mayan calendar).
3. a method of determining the beginning of a new day (sunrise, sunset, moonrise, north, south) and counting the length of the day and hour.
Currently, the most widely used calendar in the world is the Gregorian calendar – introduced 15th October 1582 by Pope Gregory XIII. It’s based on the length of the tropical year.
If you want to learn the details, visit: en.wikipedia.org/wiki/Calendar
Printbox is a photo calendar online software.
With photo calendars you can enjoy every day of a year. Printbox editor makes it easy to design your own photo calendar and create it online to be uniquely yours. Different styles, sizes, background colors and designs makes your project very personal. Printbox photo calendars are great way to celebrate your special days like birthdays, anniversarties, New Year and even a new school year. You can add your special days to your photo calendar with just one click. You can start your photo calendar with a month of your choice.
Wall calendars are available in two sizes: A4 (210×297 mm) and A3 (297×420 mm).
When creating your personalized photo calendar, add photos and caption to birthdays, anniversaries, and special occasions.
Bring your photos to life and create photo calendars online. Design a Printbox photo calendar, enjoy your memories and share it with family and friends.
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