I had 9 months (264 days to be exact) between my retirement and my ADSC date. I was assuming they took $25k (yearly payment) * 264/365 to get the amount but that comes out to $18k so I'm not sure why mine is a little less. The actual # is a bit over 17 but I don't have access to it right this second.

Honestly I'm not nearly as mad with them recouping legitimately as provided by the ACP agreement as I am about them completely misinterpreting it when I asked for confirmation. I probably would have made some different choices and been more prepared for the hit if they had given me the correct answer in 2010. I hope it's some benefit to you to know in advance it will be taken back. If I were you I would figure out what percentage of days you aren't serving and multiply that by how much per year you get. Or, you could read AFI 36-3004 and see if it makes sense to you. Just don't ask somebody. The government takes no responsibility for its employees not knowing how to do their job. We are all expected to be Title 10 USC experts.(/sarcasm in case you can't tell)