OCT 31 == DEC 25
God is a computer geek.
HEX 19?
Yes, and what is hex 19 in EBCDIC? "EM" (End Message!)
First, Hex is EBCDIC (extended binary-coded decimal interchange code)
Then the problem is there is no hex 19. But decimal 19 expressed in hex is 13
When in the base 16 number system, you don't 'roll over' (like 9 to 10) until you have added 1 to 'F' to get 10 (base 16).
Numbering in Hex is 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F. 'A' equates to 10 and 'F' equates to 15. So after adding 1 to 'F' (or 15), you get a 'roll over' to 10 (but in base 16).
Since 10 (base 16) equals decimal 16, adding 3 more gets 19 (base 16) or as mentioned above, 13 (base 16). Simple right? Oh, I've been a mainframe programmer since 1970 on Big Blue.