The 4-1-4 system is how the academic year is broken up between terms. Respectively 4 classes would be taken in fall, 1 class in winter and 4 classes in spring which gives the abbreviation of 4-1-4.
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One was a lunar calendar based on the phases of the moon. Priests used this calendar to determine religious days and lucky days. The other was a solar calendar,based on the movement of the sun. It's similar to the calendar we use today
One will find that the school calendar year actually lasts differently in different areas. Some school districts have a year-round academic calendar, while others may follow a typical school calendar year of September through May.
69
414 is CDXIV.
725-414 = 311