If you need to see Bash history with timestamps, use this command.
HISTTIMEFORMAT="%d/%m/%y %T "
To make it permanent, add it to your .bashrc.
echo 'HISTTIMEFORMAT="%d/%m/%y %T "' >> ~/.bashrc
source ~/.bashrc
Timestamps accuracy is retroactively, meaning it will not be accurate for commands performed prior to the history time format being set.