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64'er 1994 March
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64er_Magazin_94-03_1994_Markt__Technik_de_Side_A.d64
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kalender prg. 5
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.txt
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Commodore BASIC
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2022-10-26
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635b
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32 lines
10 input"datum format ttmmjjjj ";d$
20 t=val(mid$(d$,1,2))
30 m=val(mid$(d$,3,2))
40 j=val(mid$(d$,5))
50 gosub 1000
60 input"frist in tagen ";r
70 jd=jd+r
80 gosub 2000
90 print "laeuft am";t;".";m;".";j;". ab!"
100 end
1000 rem kalender -> julianisch
1010 if m>2 then m=m-3:goto 1030
1020 m=m+9:j=j-1
1030 jh=int(j/100):ja=j-100*jh
1040 jd=int(146097*jh/4)+int(1461*ja/4)
1050 jd=jd+int((153*m+2)/5)+t
1060 return
2000 rem julianisch -> kalender
2005 j=int((4*jd-1)/146097)
2010 jd=4*jd-1-146097*j
2020 t=int(jd/4)
2030 jd=int((4*t+3)/1461)
2040 t=4*t+3-1461*jd
2050 t=int((t+4)/4)
2060 m=int((5*t-3)/153)
2070 t=5*t-3-153*m
2080 t=int((t+5)/5)
2090 j=100*j+jd
2100 ifm<10thenm=int(m+3):goto2120
2110 m=int(m-9):j=j+1
2120 return