Adjust the number to the length of your timestamps.
uniq -us 20 infile outfile
If you're on windows and do not have access to uniq, get it here amongst other places.
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
Lingua non convalesco, consenesco et abolesco. -- Rule 1 has a caveat! -- Who broke the cabal?
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.