how can I set a topic on a spesific date?

like 24th of december it wil change to "mary x-mas" or something (<-- just an example)



and now to the $remove part...

Code:
on *:TEXT:*:#: {
  if ($strip($$1) == !quote) { 
      /msg $chan 3 $+ $read(txt\quote.txt) }

  if ($strip($$1) == !addquote ) { 
     /write txt\quote.txt $2- 11:: 7added by $nick 
     /msg $chan 3done }
}


I want it strip away all the text formating codes (like bold or color) that the user enters when they are adding quotes but still keep the textformating which the script generates
Code:
 11:: 7added by $nick