In Helaman chapter 14, Samuel the Lammanite is prophesying of the coming of Christ. His prophesies include a time frame, 5 years.
When reading about the coming of Christ, it always makes me think of the second coming of Christ. I always was a bit jealous of the specificness of the 5 year time frame, but I think as the time comes closer, those watching for the signs will be no less caught "off guard" than those awaiting the first coming of Christ.
We have been given a rough time frame for the second coming. - In Revelation 8, it refers to the seventh seal, or the seventh thousand years of the earth’s temporal existence. (roughly beginning 2000 AD) During the early part of this period is when judgments come upon the earth in a final attempt to turn mankind’s heart to God; it will be sometime early in this period—how early is unspecified—when at last the earth will be cleansed, and Christ will return.
In Thessalonians, the time is described as a pregnant woman- you never know when she will go into labor- but you have a pretty good idea.
I like to remind myself to be looking for the signs, so that I can be prepared, not surprised.
This You Tube link boarders a bit on the cheesy, but it is still a fantastic song- "I Wonder When He Comes Again."- sung by Jimmy Osmond.