Important Dates for Shmitah and Yovel

2504 Counting begins

2510 First Shmitah

2553 First Yovel

Building of the 1st Bais haMikdash

Destruction of the 1st Bais haMikdash
During 70 years of Galus - only count of 49 years

The second Bais haMikdash is completed

Ezra comes to Eretz Yisrael - Yovel "count" restarts
Count of Yovel but no restrictions of the Yovel year

Destruction of the 2nd Bais haMikdash
Count of the Yovel stops - only count of 49 years