Simply put the solar lunar calender gives you the best times to fish for the day ...... weather, winds, species of fish, tackle, technique, temperature and other factors come into play.
Solar lunar calender I would imagine takes into account at what point the moon phase is at .... in turn affects your tides, magnetic poles and so forth. At some point in this time nature tells fish to feed and be active and this time changes daily because of above factors
WHATEVER !!!! just get out there and fish !!!!!!!!!!
You will always catch something .... i've never left anywhere without at least catching a few 12 ouncers