test

[Benno Schoenberger]

introductory text

capture: drop *_days  // dropping the wrong _days-variables ;-)
unab daycountvars : schoolclose*            // use local for looping over schoolclose-variables
foreach daycountvar of local daycountvars {
    bysort regionname `daycountvar' (date): gen `daycountvar'_days = _n if `daycountvar'==1        // gen number within group only for cases where schoolclose-variable equals 1
    bysort regionname (date): replace `daycountvar'_day = `daycountvar'_day[_n-1] if missing(`daycountvar'_days) & !missing(`daycountvar'_days[_n-1])    // replace by value of the previous observation within group when not missing
    order `daycountvar'_day, after(`daycountvar')        // oder new variable after original one
}

final text