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tut comments on Open thread, Feb. 9 - Feb. 15, 2015 - Less Wrong Discussion
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I've been lurking for a while and wasn't going to join the discussions until I'd finished the sequences, but it doesn't look like anyone has mentioned the possibility of just switching to a 28 hour sleep cycle. I've wanted to try one for years, but college or work always conflicted.
Basically, you go to sleep 4 hours later each night. Your first bedtime is midnight, then 4AM, then 8AM, etcetera. By the 6^th sleep cycle, you will have slipped back a total of 24 hours. Because of this, the crossover point occurs after 7 days. This means it is possible to maintain a relatively normal schedule, so long as you can leave work early on Mondays, and get to work late on Fridays due to sleep.
Xkcd has a rather nice graphical illustration, and the comic explanation is a bit more thorough than I was.
And this schedule will also drive you stark raving mad.
Shift work, especially work where you have to be up at night sometimes but not always, is associated with heart attacks, weight gain and several different psychiatric conditions that involve being miserable and unproductive etc.
If you want to change your sleep schedule without getting jet lagged you should shift your wake up time by no more than 10 minutes per day. So shifting one hour should take almost a week, four hours the better part of a month.
This isn't traditional shift work; in shift work you shift by 8 hours all at once, and then it takes ~5 days for bodily hormones to adjust. Shifting by 2 hours a day has less of an obvious problem. Do you have a source for that 10 minutes claim? IIRC the body's natural cycle in the absence of external cues tends to be ~25 hours, so I would expect the "no jetlag shift" to be asymmetric.