Dates may be woven into the designs of rugs. Usually the date presumed to the year that the rug was woven or presented as a gift. There is some skepticism about the reliability of the such dates because a weaver may use a much earlier date or may copy a date from an earlier rug. Please also keep in mind that most weavers of the early era were illiterates, so even with good fate mistakes were done.
The dates appear on the rugs are either Gregorian dates or Islamic dates according to the weaver’s fate. Gregorian dates were generally in western numeric symbols and could be found in European origin items or Armenian weaves. Islamic dates were used in the rugs using Arabic or Farsi numbers, which are quite similar. Even though that the Persian dates differ from the Islamic dates most of the Persian rugs were dated using the Islamic dates.
The following is a chart for calculating the Islamic date VS the Gregorian date.
Please note that the 0 (Zero) is shown in the chart as a diamond shape figure but in reality in most cases Zero is a dot