I want the KZTIME in all my files to be 00:00:00.00.
For example, if I have "kztime = 00:00:00.095", I do
SAC> ch allt 0.095
which changes the time appropriately for kztime, b ,e, o, etc.
Basically, I want to subtract kztime from kztime.
Is there a way, in SAC, to extract kztim in seconds to use it for changing