Hexadecimal Value for DHCP Option 2 (time offset)

ip dhcp pool Cisco-DHCP-poll-with-option-002
   network 10.0.0.0 255.255.255.0
   default-router 10.0.0.1
   dns-server 10.0.0.1
   option 2 hex 0000.2a30
!
GMT offset (in hr)GMT offset in secondsGMT offset in Hexadecimal for Cisco configGMT offset in Hexadecimal
000000.0000 
136000000.0E100xE10
272000000.1C200x1C20
3108000000.2A300x2A30
4144000000.38400×3840
5180000000.46500×4650
6216000000.54600×5460
7252000000.62700×6270
8288000000.70800×7080
9324000000.7E900x7E90
10360000000.8CA00x8CA0
11396000000.9AB00x9AB0
12432000000.A8CD0xA8C0
-1-3600FFFF.F1F00xFFFFF1F0
-2-7200FFFF.E3E00xFFFFE3E0
-3-10800FFFF.D5D00xFFFFD5D0
-4-14400FFFF.C7CD0xFFFFC7C0
-5-18000FFFF.B9B00xFFFFB9B0
-6-21600FFFF.ABA00xFFFFABA0
-7-25200FFFF.9D900xFFFF9D90
-8-28800FFFF.8F800xFFFF8F80
-9-32400FFFF.81700xFFFF8170
-10-36000FFFF.73600xFFFF7360
-11-39600FFFF.65500xFFFF6550
-12-43200 0xFFFF5740

http://www.cisco.com/en/US/tech/tk86/tk804/technologies_tech_note09186a0080093d76.shtml