Internally, PILAR works in seconds, but she makes an attempt to read and show something easier:

 

…	seconds
… s	seconds
… m	minutes
… h	hours
… d	days

 

that you may combine as needed. For instance

3d207m1

to be read as “3 days + 207 minutes + 1 second”.

Some other examples:

 

15s	15 seconds
1m30s	1 minute + 30 seconds
90s	1 minute + 30 seconds
2h	2 hours
2h30m	2 hours + 30 minutes
24h	24 hours = 1 day