Calculation interval

 - 
01
 - 
08
  
00
 : 
00
 - 
01
 - 
31
  
00
 : 
00

Enter the start date and end date, calculate the interval between the two dates

Calculation date

 - 
01
 - 
08
later
   
   
day

Enter the start date and conditions, calculate the date of the start date meet the input conditions