Translation:It is two o'clock in the afternoon.
No explanation here of what the 's is short for.
Did you try to look it up? - https://en.wiktionary.org/wiki/%27s
In short, it's a remnant of when Dutch used genitives des middags = 's middags
You can also find an explanation in the tips and notes of the skill.
Don't forget that the latter is not accessable from the app unfortunately.
Where can I find tips and notes?
why my answer: It is two o'clock PM was not accepted??
It's either "It's two PM" or "It's 2 o'clock in the afternoon".
OK Thanks xMerrie.