What Is the Time?

Ruth from Leaden Hall School wrote to us to say:

I started on $20$ past $12$, because that is the earliest one (if you think of it as $20$ past $12$ in the morning).
After, I just followed along, continuing, going down into late morning.

Taya, Jessica and Anna from St Joseph also went from the same starting point.  Here are the times in the order they gave:

12.20
1.25
1.55
3.10
4.05
5.15
5.50
7.00
7.40
9.30
10.45
11.35  
 

Tia listed the times in the same order but started at 1.25 rather than 12.20. 

Someone who didn't give their name pointed out that we don't know whether the times on the clocks are morning (a.m.) or afternoon/evening (p.m.).  Could this make a difference to the ordering, I wonder?