A snippet from the Daily Reflections by Fr. Patrick Henry Reardon (here)
….Peter went on to say, on a misunderstanding of what is meant by “last times.” This designation “last” is qualitative, not quantitative. It is not concerned with “how much,” but “of what sort.” The “last times” are not quantified; their limit is not known to us, but that limit is irrelevant to their quality. The last times are always the last times, no matter how long they last. Since the first coming of the Lord Jesus Christ, we are always within the eleventh hour, and this designation means only that it is the hour before the twelfth; it can last as long as God intends it to.
Sunday, August 10
2 Peter 3:10-18: Since only God knows the length of the eleventh hour, the Lord’s return will confound all human calculations of its timing. The simile of the thief in the night, for instance, must not be taken literally, because it is never nighttime everywhere at the same time, and the Bible contains no hint that the Lord will return to the earth by following the sequence of its appointed time zones!
This comparison with the thief’s nocturnal entrance was doubtless common among the early Christians (Matthew 24:43; Luke 12:39; 1 Thessalonians 5:2; Revelation 3:3; 16:5). It will all happen with a “rush,” this onomatopoeia corresponding to the Greek verb rhoizedon in verse 10. Watchfulness, therefore, and a holy life are the proper responses to our true situation in this world (verse 11; Matthew 24:42-51; 1 Thessalonians 5:1-11). Both heaven and earth will be renewed (verse 13; Isaiah 65:17; 66:22; Revelation 21:1; cf. Romans 8:19-22). ….