AM/PM is not always correct

[poetaman]

Yesterday I was seeing correct value for field [AM]/[PM]. But then I didn't check at this hour of the day... Compare the correct time from my desktop at top right of the screen and what tty-clock reports. Also, the print for '%a, %d %b %Y %z' string seems to be off center.

tty-clock -ct -f '%a, %d %b %Y %z'

[poetaman]

Update: I checked again at ~3:40PM, and it shows PM instead of AM. So perhaps this there is a shift in time that is not being accounted for.