Updated, see below
As a reader pointed out to me via email, in 2023, May 13th is a Saturday, and May 12th is a Friday. The Miracle is said to occur on a Thursday, coinciding with the feast of Blessed Imelda. That feast is sometimes considered to be on May 12th or May 13th.
For 2023 to be the year of the Miracle, we would have to consider that Thursday, May 11th, would count as the vigil of the feast of Blessed Imelda. And the Miracle was said to occur on the evening of Thursday, so that consideration would work.
At this point, I don’t know what to say about the date of the Warning and Miracle. 2023 is a possible year. Otherwise, 2027 is perhaps the next opportunity.
Updated to Add: in 2023, Good Friday is April 7th and Easter is April 9th, the same days as when Jesus died and rose (according to my research in Biblical chronology).
Ronald L Conte Jr
the reproach of Christ 
Mary has been quoted as saying, “it (warning) will occur when the world needs it most.” Humanity is imminently on the brink of, I believe, a nuclear war from a multitude of potential sources, namely intercontinental ballistic missiles. If something terrible happened now, it would be fitting that the warning occur in 2023. Repent. Pray. Fast.
Conchita is currently in her 70’s and assuming she’s supposed to be alive when these events occur, they could conceivably happen sometime in the next 10-20 years given the average female life span. I shudder to think how worse things can get between now and then.
St. Hermenegild, a young martyr of the Eucharist, feast day occurs on Thursday, April 13, 2023. Although it is the following week of Good Friday, April 7, 2023.
He was a married man who was not so young when he died. Though he refused the Eucharist from a heretical Bishop, he was imprisoned for other reasons and beheaded for a variety of reasons by his enemies. Not a good fit. Also, in 2023, the vigil of Blessed Imelda’s feast is a Thursday. She died as a child merely be receiving the Eucharist with intense devotion.