-// Take a prime number which is long (if you know a longer one please try it out!)
-define('_PRIME', 591623);
-
-// Calculate "entropy" with the prime number (for code generation)
-define('_ADD', (constant('_PRIME') * constant('_PRIME') / (pi() * getConfig('code_length') + 1)));
+// Timestamp for yesterday, today ... all at 00:00 am
+setConfigEntry('START_YDAY', makeTime(0, 0, 0, time() - getConfig('ONE_DAY')));
+setConfigEntry('START_TDAY', makeTime(0, 0, 0, time()));