OK so @mathew and I did some investigations, and I think we know what’s going on.
Looking at your activity feed, this is what we think happened:
- On July 8th at 1:48 your time, you logged 甘くて切ない pages 133-141
- On July 9th (at some time between midnight and noon), you logged 甘くて切ない pages 141 - 159 and set the date back to July 8th
- On July 9th at noon, you posted the above screenshot
What happens now is that if you submit a reading session with today’s date, we can assume that it happened just now, and we take the full date and time. But if you submit a reading session with a date in the past, we don’t know at which time this is supposed to have taken place, and so we set it to 0:00 (ET) on that day. (We can discuss whether this is the smartest time to pick, but other times will have similar effects in the opposite direction.)
This means, as far as the site is concerned, you actually logged:
- the progress from July 7th on the 8th at 1:48 PT
- the progress from July 8th on the 7th at 21:00 PT
and that’s why they appear reversed in the above screenshot.
Yes you see it, it’s the second one from the top - the pages are further than in the topmost entry 
We are aware that this is not ideal, and we will try to improve the situation 
but first of all we wanted to explain what is going on! Thanks for your patience, everybody.
