Pregnant Guppies

I apologise for the awful photos they wouldnt stay still but can you tell how close these two are to dropping?

?

She looks fairly close to me, but it's hard to tell with the pics. I'd say just follow this to determine when:

Rounded? NO
Squared Off? YES
White Dot? YES

Once she's dropped, you can start counting the days in between each drop. She'll get easier to judge as she has more drops. For instance, OldMan47 says his molly drops every 6 weeks. I haven't had enough drops to count in my personal experience with this, so that's why I used him as an example.