So according to this article (above), what gets dropped, is the days that don't equal a full month, AFTER your SL AND active service time are added together... previously, I had thought it was just about the days of SL that didn't equal a full month...
As the article explains it, if you have 20 years, 6 months, and 15 days of active service, and 5 months and 15 days of SL, then you would retire with 21 years of service and forfeit NO SL.... but one day less of SL or service time, and you'd lose an entire month of credit.... correct???