Hi Paul,
The SEL time get and set commands are mandatory for compliant IPMI implementations and the C410X BMC does indeed support them per support.dell.com/.../BMC.pdf pages 39-40. Therefore you can use an IPMI client such as ipmitool to configure those settings. For example:
$ ipmitool sel time set "9/27/2012 18:31:22"
Alternatively, ipmitool will use the client machine's current time when you specify "now" for the time, like so:
$ ipmitool sel time set now
You can conduct these remotely (UDP port 632) by specifying the BMC's IP address and credentials:
$ ipmitool -H 10.1.2.3 -U root -P secret sel time set now
Let us know how it goes and if you need further assistance. Thanks!