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(20S) and (21S) Number of Days Since January 1
05-20-2019, 12:52 PM
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(20S) and (21S) Number of Days Since January 1
Days Since January 1

Calculate the number of days since January 1. For more information, please see: http://edspi31415.blogspot.com/2019/03/t...-days.html

Input:
R1: day
R2: month
R3: 0 if we are working in a non-leap year, 1 if we are working in a leap year

Output:
R4: number of days since January 1

Program:
Code:

01 LBL A: 61,41,A
02 RCL 1:  22,1
03 STO 4: 21, 4
04 3:  3
05 5:  5
06 STO - 4:  21,65,4
07 RCL 2: 22,2
08  INPUT:  31
09  2:  2
10  x ≤ y?:  61,42
11  GTO 2:  51,41,2
12  RCL 2: 22,2
13  *:  55
14  3:  3
15  0:  0
16  . : 73
17 6:  6
18  +:  75
19  1:  1
20  .  : 73
21  6:  6
22  =:  74
23  IP:  51, 45
24  STO + 4:  21,75,4
25  RCL 3:  22,3
26  STO + 4:  21,75,4
27  RCL 4: 22,4
28  RTN:  61, 26
29  LBL 2:  61,41,2
30  RCL 2:  22,2
31   *:  55
32  3:  3
33  0:  0
34  .  : 73
35  6:  6
36  +:  75
37  3:  3
38  6:  6
39  8:  8
40:  .  : 73
41  8:  8
42 =: 74
43  IP:  51,45
44  STO + 4:  21,75,4
45  3:  3
46  6:  6
47  5:  5
48  STO - 4:  21,65,4
49  RCL 4:  22,4
50  RTN:  61,26

Example 1:
1/1/2019 - 5/7/2019 (non-leap year)
R1: 7, R2: 5, R3: 0
Result: R4 = 126

Example 2:
1/1/2020 - 11/14/2020 (leap year)
R1: 14, R2: 11, R3: 1
Result: R4 = 318
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