Number of days

Working days

calendar days

calendar days except for holidays

40-hours working week

36-hours working week

Working time

from the 1^st day of month 

until the end of month  

Working time

from the 1^st day of month

until the end of month 

5-days

6-days

5-days

6-days

days

days

hours

days

hours

days

hours

days

hours

January

31

29

19

152

24

158

19

136,8

24

144

February

28

28

20

160

24

160

20

144

24

144

March*

31

27

18

144

22

148

18

129,6

22

132

I quarter

90

84

57

456

70

466

57

410,4

70

420

April

30

30

22

176

26

174

22

158,4

26

156

May*

31

28

17

136

22

146

17

122,4

22

132

June

30

30

22

176

26

174

20

158,4

26

156

II quarter

91

88

61

488

74

494

61

439,2

74

444

I half-year

181

172

118

944

144

960

118

849,6

144

864

July*

31

30

22

176

26

174

22

158,4

26

156

August

31

31

21

168

26

172

21

151,2

26

156

September

30

30

22

176

26

174

22

158,4

26

156

III quarter

92

91

65

520

78

520

65

468

78

468

9 months

273

263

183

1464

222

1480

183

1317,6

222

1332

October*

31

30

21

168

26

172

21

151,2

26

156

November

30

30

21

168

25

167

21

151,2

25

150

December

31

30

22

176

26

174

22

158,4

26

156

IV quarter

92

90

64

512

77

513

64

460,8

77

462

Year

365

353

247

1976

299

1993

247

1778,4

299

1794

Monthly average

29,42

20,58

164,67

24,92

166,08

20,58

148,20

24,92

149,50