13TH MONTH : NIGHT DIF: 1728 ALLOWANCE: 2K NON TAXABLE 16 DUTY 17 DUTY 18 DUTY 19 DAY OFF 20 DAY OFF 21 DUTY 22 DUTY 23 DUTY 24 DUTY 25 DUTY 26 DAY OFF 27 DAY OFF 28 DUTY 29 DUTY 30 DUTY 21 DUTY