2021 working day calendar
| # | Months | 5 days (40 hours) work week | 6 days (40 hours) work week | 36 hours work week | number of working days in 5 day working week | number of working days in 6 day working week |
|---|---|---|---|---|---|---|
| 1 | January | 160 | 160 | 144 | 20 | 24 |
| 2 | February | 160 | 160 | 144 | 20 | 24 |
| 3 | March | 176 | 162 | 144 | 22 | 24 |
| 4 | 1st quarter | 496 | 482 | 432 | 62 | 72 |
| 5 | April | 176 | 174 | 156 | 22 | 26 |
| 6 | May | 159 | 163 | 148 | 20 | 25 |
| 7 | June | 176 | 174 | 156 | 22 | 26 |
| 8 | 2nd quarter | 511 | 511 | 460 | 64 | 77 |
| 9 | 1st half year | 1007 | 993 | 892 | 126 | 149 |
| 10 | July | 167 | 171 | 155 | 21 | 26 |
| 11 | August | 175 | 173 | 155 | 22 | 26 |
| 12 | September | 151 | 147 | 131 | 19 | 22 |
| 13 | 3rd quarter | 493 | 491 | 441 | 62 | 74 |
| 14 | 9 months | 1500 | 1484 | 1333 | 188 | 223 |
| 15 | October | 160 | 165 | 150 | 20 | 25 |
| 16 | November | 176 | 174 | 156 | 22 | 26 |
| 17 | December | 174 | 172 | 154 | 22 | 26 |
| 18 | 4th quarter | 510 | 511 | 460 | 64 | 77 |
| 19 | 2nd half year | 1003 | 1002 | 901 | 126 | 151 |
| 20 | annual | 2010 | 1995 | 1793 | 252 | 300 |
