Month	Working days	Working hours	Sat & Sun.	Others
January	20	160	10	1
February	20	160	8	0
March	23	184	8	0
April	19	152	9	2
May	21	168	9	1
June	20	160	8	2
July	21	168	10	0
August	23	184	8	0
September	22	176	8	0
October	21	168	10	0
November	22	176	8	0
December	21	168	9	1
Total annual working hours	253	2024	105	7
Average / Month	21	169	8.75	0.58