VS 2010 DateTime To Hex

Dear All

I have an application (Windows Based) developed with Sybase DBMS. Applications saves the datetime in hexadecimal format in the database. I just need to undestand how would it be generated thru application (Datetime to Hex conversion).


Below are few samples;
Sample 1:
Real Date&Time : 2013-01-06 22:38:25.000
Stored Hex Val : 0xa1c4e950

Sample 2:
Real Date&Time : 2013-01-06 22:25:07.000
Stored Hex Val : 0x83c1e950

Sample 3:
Real Date&Time : 2013-01-06 22:22:02.000
Stored Hex Val : 0xcac0e950

Can anybody help me to undestand how would be the conversion is. Data type is binary(4) for the Hexa column in database. It's urgent and early suggestions are appriciated.