Upcoming leap second

As discussed in a number of sources, a leap second is being added on June 30. Here's how to prepare your copy of GMAT:

1. Review the GMAT User Guide.
   
   
2. Download the updated US Naval Observatory leap second file:
   tai-utc.dat 
   
   

3. Overwrite GMAT's old file with this new copy:

   <GMAT>\data\time\tai-utc.dat

4. Download the updated NAIF leap second file:
naif0011.tls 

    

5. Place this file in your GMAT data folder:

   <GMAT>\data\time\naif0011.tls

6. Modify your GMAT startup file (<GMAT>\bin\gmat_startup_file.txt) to point to the new NAIF file:
   

   LSK_FILE               = TIME_PATH/naif0011.tls

7. Restart GMAT.

That's it! If you have any issues, try any of our help resources:

• GMAT User Guide
• User Forums
• gmat-users mailing list