Double-nudged broadcast orbit drift correction

A method in a Global Navigation Satellite System (GNSS) receiver double-nudged broadcast clock error correction, said method comprising:

• receiving a first broadcast clock error message to nudge a broadcast clock error in use at said GNSS receiver to create a first nudged broadcast clock error for a GNSS satellite, said first nudged broadcast clock error being more precise than said broadcast clock error;
• receiving a second broadcast clock error message sequentially after said receiving said first broadcast clock error message to nudge said first nudged broadcast clock error in use at said GNSS receiver to create a double-nudged broadcast clock error for a GNSS satellite, said double-nudged broadcast clock error being more precise than said first nudged broadcast clock error;
• and
• receiving a third broadcast clock error message sequentially after said receiving said second broadcast clock error message to correct said double-nudged broadcast clock error, said third broadcast clock error message smaller in size than said second and said first broadcast clock error messages.