40 0 0 / 1 ,8 -22 ** ?  
 How does this expression is not referring to every day 8:00 am to ten pm every hour 40 seconds Trigger  
 If not, what should I write it ? 
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 0/40 * 8/1 ,8-22 **?  
  
 eight o'clock start 22 o'clock end , every 1 hour and 40 seconds. 
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 m / x indicates start from m , every x is executed again 
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 this is from 8:40 sec to 22:40 seconds to start , the middle is separated by one hour 40 seconds 
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 Thank you this much I changed it before I wrote that ran all day halo  
 Can you explain this 8/1 What is the meaning 
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 you do not need to exit? 
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 oh I know my writing is 0 /1 so from Lin Chen began to count so 8-22 eight wonder Thank you much useless ;  
 under 0 and * finally asked what's the difference 
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 brother - this is wrong becomes every minute made 
 
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