So in the time between the afternoon of March 30th and end of day March 31st
One problem with your theory.....March 23/24 was the day the snapshot was taken.
In your Dashboard, click on "See how eBay calculates your discount." and then mouse over "see details" for a pop-up which tells you the exact date and time the snapshot was taken and what your ratings were at that time.
For every seller who claims eBay manipulated the numbers there is another seller who got a discount they only qualified for a few days out of the month. I got 20% in January and I only qualified on 3 days out of the whole month, just a fluke one of them was snapshot day.
The snapshot is always taken between the 23rd and 27th of the month and usually on whichever day is also a Monday or Tuesday. It's NEVER done on the 30th or 31st.
For Sellers with a 15th of the month billing date the same applies but the snapshot days of course are different (8th to 13th I think).

"What else could I do? I had no trade so I became a peddler" - Lazarus Greenberg 1915
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