[SAC-HELP] Need Help to reverse the time axis

[mohit agrawal]

Dear sac users,

I hope you all would be doing fine. I have sac headers of S-wave receiver
functions but I want to reverse the time axis of these headers so that it
will look like as P-wave receiver functions to compare. Can anybody tell me
how to do it ?

Your help will highly be appreciated.

Thanks,

Regards,

Mohit Agrawal
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