DateTime hex format

Question

I have the following know pair of hex values and dates:

7D 92 D2 5C = 26/03/2009 - 09:28
7D 92 DA CC = 27/03/2009 - 11:12
7D 92 E3 56 = 28/03/2009 - 13:22
7D 92 EC 4F = 29/03/2009 - 17:15
7D 92 F3 16 = 30/03/2009 - 12:22
7D 92 FB 1A = 31/03/2009 - 12:26
7D 93 0B 01 = 01/04/2009 - 12:01
7D 93 12 88 = 02/04/2009 - 10:08
7D 93 1A 30 = 03/04/2009 - 08:48
7D 93 22 DD = 04/04/2009 - 11:29
7D 93 2A D5 = 05/04/2009 - 11:21

I cant figure out how to convert from the one to the other....

Anyone recognise the hex format?

Al

Answer 1

It's a simple bitfield, even though that's a pretty weird time format :)

1111101100100101101001001011100
                         011100 - 28 minutes
                    01001       - 09 hours
               11010            - 26 days
           0010                 - month 3 (zero-based, hence 2)
11111011001                     - 2009 years

would be my guess.