Lock Calendar SBSettings Toggle is new tweak in Cydia developed by r_plus that allows toggling (enable/disable) of Lock Calendar, quickly from SBSettings. For those who are unfamiliar with Lock Calendar, it’s a Mobile Substrate plug-in that adds an overlay to your lockscreen, displaying your upcoming calendar events (dates, times, event titles and locations). More information is available here.
Note: This will only work if you have Lock Calendar installed from Cydia.
Lock Calendar SBSettings Toggle is available in Cydia via BigBoss repository for free.