Synopsis has released a new application written in Lua, named Timer. This program will show both your start and end times, the duration and a previous history of the last times you recorded. This program comes with both standalone and Luaplayer version as well.

You can get it in our PSP Download section [here].
Thanks for the info modcase =)

Currently, this program will only run on PSPs with firmware version 1.0 or 1.50. If you do not know which firmware version your PSP has, or if you need help installing this program on your PSP, check our Ultimate FAQ.
If you have a higher firmware version than 1.50 on your PSP, please check the information below:
? To downgrade the firmware from a version higher than 1.50, please visit [here].
? If you want to try to run it on a 2.0 PSP, please visit our forum for the latest 2.0 eboot loader [here].