There are 3 exiles to Babylon:-
1) 605BC. 2) 597BC. 3) 586BC.
There are 3 returns from Babylon:-
1) 538BC – Zerubbabel to rebuild the Temple.
2) 458BC – Ezra to rebuild the people.
3) 444BC – Nehemiah to rebuild the wall.
Between Zerubbabel and Ezra we have Mordecai/Esther.
The events of Esther take place between 483-473BC. (10yrs)
A remnant returns to the Land.
Ezra means – Yahweh Helps.
(Seen after 67 years)
A people build the walls.
Nehemiah means – Yahweh Comforts.
(Seen over 52 days of building)
A remnant are delivered and preserved.
(Seen over some 60 years)