Cannons-Missing 24 hours?

[dragonettefish]

No: HPFGUIDX 42559

Hi! I dont get the chance to read these message boards every day and 
lately I have been seeing a lot of posts about cannons and a missing 
24 hours that I assume was sometime during Molly and James Potters 
death. I am confused to what exactly cannons mean and why everyone 
thinks there was a time gap. I was hoping someone could explain all 
of it to me. Thank You!

dragonettefish