Wanted to know how to get All Saturdays and Sundays date in a year?

try this

a!localVariables(
  /* Define the year for which you want to get the dates */
  local!year: 2023,
  /* Define the start for the year */
  local!startDate: date(local!year, 1, 1),
 
  /* Get the number of days for the year*/
  local!daysInYear: if(isleapyear(local!year),366,365),
 
  /* Iterate through each day in the year */
  a!forEach(
    items: enumerate(local!daysInYear),
    expression: a!localVariables(
      /* Get the current date */
      local!date: adddays(todatetime(local!startDate), fv!item),
      /* Check if the current date is a Saturday or Sunday */
     if(
       Weekday(local!date,2) = 6 /* Saturday */,
       a!map(day:"saturday",date:todate(local!date)),
       if(
         weekday(local!date,2) = 7  /* Sunday */,
         a!map(day:"sunday",date:todate(local!date)),
         {}
       )
     )
     
    )
  ),
  /* Display the list of Saturday and Sunday dates */

)

try this

a!localVariables(
  /* Define the year for which you want to get the dates */
  local!year: 2023,
  /* Define the start for the year */
  local!startDate: date(local!year, 1, 1),
 
  /* Get the number of days for the year*/
  local!daysInYear: if(isleapyear(local!year),366,365),
 
  /* Iterate through each day in the year */
  a!forEach(
    items: enumerate(local!daysInYear),
    expression: a!localVariables(
      /* Get the current date */
      local!date: adddays(todatetime(local!startDate), fv!item),
      /* Check if the current date is a Saturday or Sunday */
     if(
       Weekday(local!date,2) = 6 /* Saturday */,
       a!map(day:"saturday",date:todate(local!date)),
       if(
         weekday(local!date,2) = 7  /* Sunday */,
         a!map(day:"sunday",date:todate(local!date)),
         {}
       )
     )
     
    )
  ),
  /* Display the list of Saturday and Sunday dates */

)