1,656 units of time. Noah went into the ark for just over a year (10 unit remainder). Noah lived another remainder of 350 units. 1,656+350+10= 2,016.
When you plan a wedding, you take the number of guests into account(must have enough to drink). "2 or 3 firkins" translates to 144. A firkin is 72 pints. If you transferred that into larger containers (sextarius from Mark) you would fill 48 (3x48=2x72). From Jacob's weddings, Solomon's dedication, and Hezekiah's dedication we know the time for the feast is 7+7=14 days.
14x144=2,016
Perhaps you like it presented another way…
The time of fruit is after 4 years…1,440
You first fruits (tithe) is 10% or 144
Your first fruits feast is 7 and 7
I love numbers, but I don't see any significance in these.
I think Jesus' point is clear about His appearing being like the days of Noah. You don't have to do any calculations.
Matthew 24:37-41
37 But as the days of Noah were, so also will the coming of the Son of Man be. 38 For as in the days before the flood, they were eating and drinking, marrying and giving in marriage, until the day that Noah entered the ark, 39 and did not know until the flood came and
took them all away, so also will the coming of the Son of Man be. 40 Then two men will be in the field:
one will be taken and the other left. 41 Two women will be grinding at the mill:
one will be taken and the other left.
As you can see, Jesus' main point is about people being "taken" as the wicked were taken in the flood (that is, they died because of God's judgment). In Luke, Jesus uses the word "destroyed" instead of taken, but taken shows up later in the passage.
Luke 17:26-37
26 And as it was in the days of Noah, so it will be also in the days of the Son of Man: 27 They ate, they drank, they married wives, they were given in marriage, until the day that Noah entered the ark, and the flood came and
destroyed them all. 28 Likewise as it was also in the days of Lot: They ate, they drank, they bought, they sold, they planted, they built; 29 but on the day that Lot went out of Sodom it rained fire and brimstone from heaven and
destroyed them all. 30 Even so will it be in the day when the Son of Man is revealed.
31 “In that day, he who is on the housetop, and his goods are in the house, let him not come down to take them away. And likewise the one who is in the field, let him not turn back. 32 Remember Lot’s wife. 33 Whoever seeks to save his life will lose it, and whoever loses his life will preserve it. 34 I tell you, in that night there will be two men in one bed: the
one will be taken and the other will be left. 35 Two women will be grinding together: the
one will be taken and the other left. 36 Two men will be in the field: the
one will be taken and the other left.”
37 And they answered and said to Him, “Where, Lord?”
So He said to them, “Wherever the body is, there the eagles will be gathered together.”
The wicked are taken / destroyed (die) when Jesus appears, and vultures eat their bodies.
This is stated also in Revelation 19.
Revelation 19:17-18, 21
17 Then I saw an angel standing in the sun; and he cried with a loud voice, saying to all the birds that fly in the midst of heaven, “Come and gather together for the supper of the great God, 18 that you may eat the flesh of kings, the flesh of captains, the flesh of mighty men, the flesh of horses and of those who sit on them, and the flesh of all people, free and slave, both small and great.”
21 And the rest were killed with the sword which proceeded from the mouth of Him who sat on the horse. And all the birds were filled with their flesh.
When Jesus contrasted the false returns with His true return in Matthew 24:23-28, this is one of His points (people will die and vultures will eat their bodies):
Matthew 24:28
28 For wherever the carcass is, there the eagles will be gathered together.
Jesus' other mark of His true return in contrast to the false ones is that it will be like lighting that comes from the east to the west - that is, everyone can see it (Matthew 24:27, Luke 17:24).