They're confused...
The note at the top states 1200Z, but no date. In the lower section, they give a date and it will be at 1400Z.
Note: At 1200Z (0800 EDT) the following DGPS beacon signals will be terminated.
Pigeon Point, CA (287 KHZ, Site ID 883)
Robinson Point, WA (323 KHZ, Site ID 887)
Annapolis, MD (301 KHZ, Site ID 847)
Bobo, MS (297 KHZ, Site ID 792)
New Bern, NC (294 KHZ, Site ID 771)
CURRENT DGPS ADVISORIES FOR 07 Sep 2018
Site Name Site Id BNM # OUTAGE MESSAGE
SCHEDULED / UNSCHEDULED OUTAGES
Lincoln 764 0253-18
BROADCAST SITE STATUS IS UNCONFIRMED DUE TO NETWORK OUTAGE AS OF 08/28/2018 16:39 Z UNTIL FURTHER NOTICE.
Upolu Point 879 0261-18
BROADCAST SITE WILL BE UNUSABLE FROM 09/11/2018 13:00 Z TO 09/12/2018 00:00 Z.
Youngstown 839 0260-18
BROADCAST SITE IS OFF AIR AS OF 09/03/2018 02:06 Z UNTIL FURTHER NOTICE.
GENERAL INFORMATION
Pigeon Point 883 0268-18
DGPS BROADCAST SITE WILL PERMANENTLY CEASE BROADCASTING CORRECTIONS ON 30 SEPTEMBER 2018 AT 1400Z
Annapolis 847 0265-18
DGPS BROADCAST SITE WILL PERMANENTLY CEASE BROADCASTING CORRECTIONS ON 30 SEPTEMBER 2018 AT 1400Z
Bobo 792 0266-18
DGPS BROADCAST SITE WILL PERMANENTLY CEASE BROADCASTING CORRECTIONS ON 30 SEPTEMBER 2018 AT 1400Z
New Bern 771 0269-18
DGPS BROADCAST SITE WILL PERMANENTLY CEASE BROADCASTING CORRECTIONS ON 30 SEPTEMBER 2018 AT 1400Z
Robinson Point 887 0267-18
DGPS BROADCAST SITE WILL PERMANENTLY CEASE BROADCASTING CORRECTIONS ON 30 SEPTEMBER 2018 AT 1400Z