The time frame, period, or era depicted in a dream usually has significant meaning.
However, the concept of timeframe can be tricky. For example, the subconscious mind often uses very familiar events from the past to represent current events in your life. For example, a dream about your high school graduation 20 years ago might actually represent the promotion you just received last week. Another example is when the subconscious uses a past boyfriend or girlfriend to represent your current one.