Why Friday?

[Copper]

CDC gives statistics on the number of cases by date of onset.

When I noticed that The last couple Fridays seemed high I arranged them by day of the week.

32,762 cases began on a Wednesday and 45,680 on a Friday.

Why the big difference?

 Number of cases by date of onset as of 4/12

Date      S         M       T       W       T       F       S
1/12      0	    0	    3	    2	    1	    0	    1	
1/19      0	    3	    1	    3	    1	    5	    4	
1/26      1	    1	    2	    3	    6	    4	    7	
2/2       7	    3	    0	    2	    4	    4	    4	
2/9       4	   10	    9	    8	    9	   14	   12	
2/16     11	   26	   25	   19	   34	   42	   33	
2/23     51	   98	   78	  115	  116	  180	  157	
3/1     369	  358	  417	  456	  541	  723	  870	
3/8    1363	 2318	 2489	 3314	 5186	 6531	 7344	
3/15   8988	10606	 8798	 8640	10332	12306	12288	
3/22  12733	13982	10119	10374	15274	14274	13500	
3/29  13635	14183	10141	 9490	13772	11569	 8081	
4/5    4436	 2315	  699	  336	  127	   28	    1	
4/12      0
 
 
	41598	43903	32781	32762	45403	45680	42302
 

https://www.cdc.gov/coronavirus/2019-ncov/cases-updates/cases-in-us.html?CDC_AA_refVal=https%3A%2F%2Fwww.cdc.gov%2Fcoronavirus%2F2019-ncov%2Fcases-in-us.html

[jon-nyc]

Testing labs trying to run through their backlog before the weekend.

I’ve definitely noticed weekend lulls is data surrounding this. Not a perfect consistent pattern, but it’s visible.

[89th]

I wonder if it’s related to the case of the Mondays?

Sorry not sorry.