Date
1021165435
1021215439
1021215441
1021162126
1021162122
1021212135
1021162137
1021212136
1021213136

select [Hora origen ] ,
       nHora= convert(time ,
                 right( '0' + convert(varchar, [Hora origen] / 10000 ) , 2 )
               + ':'
               + right( '0' + (([Hora origen]-([Hora origen] % 100))% 10000)/100 , 2 )
               + ':'
               + right( '0' + convert(varchar, [Hora origen] % 10000 ) , 2 )
               )
from Trx_tj$;