The email I sent using blat is showing wrong time at the receivers end. The time is shown one hour earlier than actual sent time. I verified it by sending to my own email. I saw this thread where another user faced similar issue but no fix.
My guess is that you are in US Eastern Timezone, your system is configured to GMT, while your managers' systems are all configured for Easter Time. Blat tries to get the local time in your system, plus the time zone difference from GMT, and put the correction into the outgoing header
If Anybody know how to properly give timezone details to blat or fix this please let me know how.