Next, we need to calculate the day of the week in four days. We can have four days from Thursday:
1. Thursday (today)
2. Friday
3. Saturday
4. Sunday
5. Monday
6. Tuesday
7. Wednesday
8. Thursday
9. Friday
/kloc-0 0. Saturday
1 1. Sunday
12. Monday
13. Tuesday
14. Wednesday
15. Thursday
16. Friday
17. Saturday
18. Sunday
19. Monday
20.tuesday
2 1. Wednesday
22.thursday
23.friday
24.saturday
25.sunday
26.monday
27.tuesday
28.wednesday
29.thursday
30.friday
3 1. Saturday
Sunday
33.monday
Tuesday
35.wednesday
36.thursday
Friday
Saturday
Sunday
40.monday
4 1. Tuesday
42.wednesday
43.thursday
44. Friday
Saturday
46. Sunday
47. Monday
Tuesday
Wednesday
50. Thursday
5 1. Friday
Saturday
53. Sunday
Monday
Tuesday
Wednesday
57.thursday
Friday
Saturday
Sunday
6 1. Monday
Tuesday
Wednesday
64.thursday
65.friday
Saturday
Sunday
Monday
Tuesday
70.wednesday
7 1. Thursday
72.friday
Saturday
74. Sunday
Monday
Tuesday
Wednesday
78.thursday
79.friday
Saturday
8 1. Sunday
82.monday
Tuesday
Wednesday
85.thursday
86. Friday
Saturday
Sunday
Monday
90. Tuesday
9 1. Wednesday
92. Thursday
93. Friday
Saturday
Sunday
96. Monday (mother's birthday)