DEFCON 1 seemingly associated with 4-10-20 and "[non-nuclear]" sure seem applicable to this period, if ever I've thought that.
I see a lot of digits to support "SKY EVENT" around this time too.
Also remember, Notre Dame was last year on TAX DAY (4/15) which has ben moved to 7/15 this year, which is also 1 day prior to JFK Jr. death day.