PHP Code:
#xdev: 0

expire-default: +15 days
expire-rule:
#   * * * * fri  +1 months
#   * * 1 * *    +24 months
# Settings from page 18+19 in users guide:
# https://sanctum.geek.nz/presentations/incremental-backups-dirvish.pdf

#       MIN HR    DOM MON       DOW  STRFTIME_FMT
#        *   *     *   *         1  +3 months
        *   *     1-7 *         1  +1 year
        *   *     1-7 1,4,7,10  1
#        *   10-20 *   *         *    +4 days
#        *   *     *   *         2-7  +15 days 
We use Dirvish default settings, as in this link: https://dirvish.org/debian.howto.html
Or... to be more correct... we used to have the default settings and that's when we discovered this summer that backup from last November was not present!
We don't need anything fancy! Just the default settings!
Please guide me! What am I missing!?