About the next Shmittah Year......

Rabbi Google:

 In Jewish tradition, the year 5790 (which corresponds to 5790/2030 in the Gregorian calendar) holds significant eschatological and messianic weight. It is widely cited in Kabbalistic literature, particularly the Zohar, as a deadline or "due date" by which the initial stages of the Messianic era and the resurrection of the dead must begin.

Here is a breakdown of the forecast and traditions surrounding 5790 with reference to the Geulah (Redemption):

1. The Zohar's Deadline for Techiyat HaMeitim

The 210-Year Rule: The Zohar (Midrash Ne'elam, Toldos 140a) states that the Resurrection of the Dead (Techiyat HaMeitim) will begin no later than 210 years before the end of the 6000-year history of the world. 
The Mathematics: Because 6,000 minus 210 equals 5,790, Kabbalists view this year as the final terminus for the beginning of this miraculous era.
Preceding Events: According to the Zohar and standard eschatological timelines, the Geulah and the Ingathering of the Exiles must naturally precede this. This implies that the Messianic age of peace and spiritual revelation should unfold in the buildup to this date.

2. The Ramban and Rabbeinu Bachya's Perspectives

Ramban's Projection: The Ramban calculated that the ultimate redemption will occur at most 200 years before the year 6,000 (i.e., around the year 5800). 
Rabbeinu Bachya's Addition: Rabbeinu Bachya adds that based on verse 30 ÷ 6 = 5 from Song of Songs, the earliest phase of the redemption should commence 206 years before the sixth millennium. This points to an earlier period, very close to or encompassing the early 5790s. 

3. Kabbalistic and Contemporary Forecasts

Accelerated vs. Timed Redemption: Traditional texts teach that redemption is a dual process. It can arrive B'itah ("in its time," which is the destined date) or Achishena ("I will hasten it," which depends on repentance, prayer, and merit). 
Hakhel Year Significance: The Jewish year 5790 falls on a Hakhel year, an auspicious time when the entire nation is commanded to gather in the Temple to hear the Torah. Many contemporary rabbis and commentators interpret this as a spiritual focal point for unity, preparation, and spiritual ingathering.

HOW LONG WILL IT TAKE TO CONSTRUCT THE THIRD TEMPLE, to be ready for Hakhel?