[LEAPSECS] leapseconds, converting between GPS time (week, second) and UTC

[Paul Hirose]

On 2019-01-16 1:35, Steve Allen wrote:
> 
> Does it know that rubber seconds do not apply to timestamps in central
> Europe made using DCF77 from 1970-01-01 to 1972-01-01?

All my DLL knows is what's in the UTC file. If the file indicates no 
rate offset in the years 1970-71 and some fractional second step 
adjustments, that's what you get. An existing file could be edited to 
match the DCF77 flavor of UTC. Then construct a UtcTable object from the 
file:

SofaJpl.UtcTable dcf77Table = new SofaJpl.UtcTable(filename);

Construct a Utc object with that table as a parameter.

SofaJpl.Utc utc = new SofaJpl.Utc(year, month, day, fracday, dcf77Table);

Variable "utc" will convert itself to TT based on the custom table. 
Then, to complete a round trip, create another Utc object from that TT 
and the custom table. When formatted as date/time you get the original UTC.