dayOfTheMonth({system.currentDateTime}, LOCAL) < 10 ?
addDays({system.currentDateTime}, (10 - dayOfTheMonth({system.currentDateTime}, LOCAL)), LOCAL) :
(dayOfTheMonth({system.currentDateTime}, LOCAL) < 20 ?
addDays({system.currentDateTime}, (20 - dayOfTheMonth({system.currentDateTime}, LOCAL)), LOCAL) :
lastDayOfTheMonth({system.currentDateTime}, LOCAL)) |