Calculation of no. of weeks in Form 108

Hello everyone,,

Can you please tell me whether number of Sundays and holidays are excluded  or included while calculating "Time spent in weeks" under "category of work experience" in Form 108 ? Should only the number of working days (i.e. Total days - Leave taken) be considered for calculation of weeks? I would also like to know the permitted days of leave during total articleship period of  three and a half years ? Is it 1/6th or 1/7th of the total working days ? Please reply. Thank you.