Thousand, a thousand, this thousand, which thousand all indicate 1000.
"Thousand years" (Revelation 20:2) is χιλια ετη.
χιλια = 1000
ετη = years
Hence 1000 years.
"Time no longer" = no more delay."
It does not indicate the end of time itself, since time is not an entity, rather time is simply the interval in which action occurs.
Yes, after a/the thousand years; symbolizing TIME, ends, there will be no longer any delay for the time for spiritually building the Kingdom of God in heaven has expired, and time; "little season" for Satan to be set free has come. Physical time measured by seconds, minutes, hours, days, nights, seasons and years given this earth will not be part of the ETERNAL age to come. After Satan has his little season and he and all with him burned up, the eternal age to come will consist of a new heaven and new earth, wherein all things are made new, and there shall no longer be sun or moon, nor will there be night. Because the glory of God will be its light, and the Lamb the Light thereof. And since there will be no temple in the eternal age to come, it makes zero sense to argue for ONE thousand more years given this age after Christ comes again to establish the Kingdom of God with another holy temple then.
Re 21:1 ¶ And I saw a new heaven and a new earth: for the first heaven and the first earth were passed away; and there was no more sea.
Re 21:2 And I John saw the holy city, new Jerusalem, coming down from God out of heaven, prepared as a bride adorned for her husband.
Re 21:3 And I heard a great voice out of heaven saying, Behold, the tabernacle of God is with men, and he will dwell with them, and they shall be his people, and God himself shall be with them, and be their God.
Re 21:4 And God shall wipe away all tears from their eyes; and there shall be no more death, neither sorrow, nor crying, neither shall there be any more pain: for the former things are passed away.
Re 21:5 And he that sat upon the throne said, Behold, I make all things new. And he said unto me, Write: for these words are true and faithful.
Revelation 21:9 (KJV) And there came unto me one of the seven angels which had the seven vials full of the seven last plagues, and talked with me, saying, Come hither, I will shew thee the bride, the Lamb's wife.
Re 21:22 And I saw no temple therein: for the Lord God Almighty and the Lamb are the temple of it.
Re 21:23 And the city had no need of the sun, neither of the moon, to shine in it: for the glory of God did lighten it, and the Lamb is the light thereof.
Re 21:24 And the nations of them which are saved shall walk in the light of it: and the kings of the earth do bring their glory and honour into it.
Re 21:25 And the gates of it shall not be shut at all by day: for there shall be no night there.
Re 21:26 And they shall bring the glory and honour of the nations into it.
Re 21:27 And there shall in no wise enter into it any thing that defileth, neither whatsoever worketh abomination, or maketh a lie: but they which are written in the Lamb's book of life.
This earth will not be given another ONE thousand years of time after the seventh trumpet begins to sound there will no longer be anymore delay. The only time left for this earth when the seventh angel begins to sound shall be Satan's "little season", and that in NO WAY equates to ONE thousand years of more time for this earth once the last/seventh trumpet begins to sound.