Many of my novels are written using two or more timelines that eventually converge at some point. Keeping these two timelines synchronized can be a pain in the neck especially if you're a seat of the pants writer like me. That's one reason I bought Aeon Timeline. Unfortunately, I didn't start a timeline when I started work on Collision Course and now I'm paying for that oversight.
About a week and a half ago I discovered that my parallel timelines were way out of sync and I needed to go back and do some serious rewriting. This time, I created a timeline in Aeon Timeline. I'm having to move entire chapters, insert new ones, and cut and paste huge blocks of text to get things to line up. Doing this in Microsoft Word would be a chore especially because I also need to constantly refer to my notes. Scrivener keeps my notes in a window at the bottom of my screen and allows me to simply drag chapters around, move blocks to a holding area, and do all the editing I need.
Additional writing in my novel will not happen until I get the timeline fixed. I'm not sure how long this is going to take especially since my time to write is limited these days.
Also, I'd like to remind anyone who reads this to check out my website and take a look at the Tools page where I've put a bunch of calculations I've found useful when writing science fiction. If you find an error or you would like to see any other calculators added, please let me know.