'Seventh Year' in the Bible

And Zimri will come in and strike him and will kill him in the twentieth and seventh year to Asa king of Judah, and he will reign in his stead.

In the twenty and seventh year, the year to Asa king of Judah, Zimri reigned seven days in Tirzah. And the people encamping in Gibbethon, which was to the rovers.