If we look at a list of Yovel years from the time of Ezra, we can see that the 33rd Yovel period is related to Kabbalah. Also, if we take the 6000 years and divide in to 50 parts of 120 years, we get a similar result.
33rd 120 Year Cycle - 3841-3960 (81-200CE)
- This was the period in which the secrets of Torah were revealed by Rebbi Shimon Bar Yochai
33rd Yovel Cycle - 4992 - 5041 (1232-1281)
- This was the period in which the secrets of Torah were published in the Zohar
Here it is in a spreadsheet.