What is the substitute of 'posixtime' which starts counting from 6th Jan, 1980

With the following code I get the TimeStamp is 08-Sep-2020 16:50:00 (This is correct/required)

gps_seconds=1283619000;
gps_start=datetime(1980,1,6,'TimeZone', 'UTC');
TimeStamp=gps_start+seconds(gps_seconds)

However, the following line give me the time time format of 04-Sep-2010 16:50:00 (10 years earlier because 'posixtime' starts counting from 1.1.1970).

TimeStamp = datetime(gps_seconds, 'convertfrom', 'posixtime','TimeZone', 'UTC');

Can anyone may help ...is there any substitute of 'posixtime' which starts counting from 6th Jan, 1980?

Answer 1

[Steven Lord]

Is there some reason your first code segment is unacceptable for your application?

gps_seconds=1283619000;
gps_start=datetime(1980,1,6,'TimeZone', 'UTC');
TimeStamp=gps_start+seconds(gps_seconds)

TimeStamp = datetime
   08-Sep-2020 16:50:00

Do you want one call to datetime without having to add on the seconds later?

gps_seconds=1283619000;
TimeStamp2 = datetime(1980,1,6,0, 0, gps_seconds,'TimeZone', 'UTC')

TimeStamp2 = datetime
   08-Sep-2020 16:50:00

Or you could use 'epochtime'.

TimeStamp3 = datetime(gps_seconds,'ConvertFrom','epochtime','Epoch',gps_start, ...
    'TimeZone', 'UTC')

TimeStamp3 = datetime
   08-Sep-2020 16:50:00

Let's check.

TimeStamp == TimeStamp2

ans = logical
   1

TimeStamp == TimeStamp3

ans = logical
   1

[SA]

Thanks, Steven for the support. There is no reason to unaccept the 1st part of the code. However, I do believe there are a lot of smart ways, people may think. In this case, I appreciate your approach.