This chapter contains detailed specifications of the various calendars that are important to studying time in the Bible. This includes the Gregorian and Julian calendars. It also addresses the problems with the Roman calendar.

  • Modern Gregorian Calendar Introduction

    The modern calendar in use throughout most of the world today is the Gregorian calendar, named after the Pope who introduced it in 1585. It was not adopted in the United States until an act of the English Parliament made it law throughout the English Empire in 1752. Since that time most other countries have adopted the Gregorian calendar. (1,275 words)

  • Julian Calendar Specification

    The Julian name for calendar structure is ambiguous. Technically is applies to the Roman calendar introduced in 45 BC. The name is popularly applied to the Christian Era calendar with New Years on March 25. (825 words)

  • Roman Calendar Introduction

    At the founding of the city of Rome the calendar had a 10 month calendar with 304 days per year. It underwent successive revisions until 5 AD when it stabilized around a structure that remained in use in some places into the 1900s. (2,783 words)

  • Bible Calendar

    The Bible was written using a specific calendar. That calendar is not used anywhere in the world today. Its structure defines how God counts days, months, years and larger quantities of time. When God says 1000 years are as a day, he means 1000 years on this calendar. (1,954 words)

  • Day of Week

    The day of the week has been stable across the entire era. Validation that the calculations are done correctly rests in part on finding events that fell on known days. A good example is the ancient fall of Jerusalem. (310 words)

  • Day Numbers

    After the invention of the computer it became important to number days by individual numbers. Astronomers use Julian Day Numbers. This website uses AA Numbers. Both show up in all date reports. What are they, how do they count? (592 words)

  • Report Format -- Key to full date reports.

    Throughout the articles on the Bible Time website a standard format of date report is used. That format usually contains 9 fields, though a short form is also used with 5 fields. The values of those fields are different ways that the individual day in question is known. This article explains the meaning of each field. (3,315 words)

  • Bible Time Clock

    Early in 2004 I was able to unravel the prophetic time line of Jesus’ passion week. The bottom line structure is this: Each hour of events in that week map to individual weeks in his public ministry. (A 7 day/1 hour ratio) These, in turn, map at 30 historical years to 1 ministry day back to the Bible’s historical time line from Adam. Taken together these ratios imply this: Each hour in Jesus’ passion week matches 210 years in the Bible’s historical chronology. When properly charted and compared against the historical time line it becomes clear that Jesus was adding editorial through the week. In other words Jesus understood this detailed prophetic replay. (3,583 words)