Hi, I have an NDF file with this date in the header: DATE-OBS= '2012-06-02T04:14:08' /YYYY-MM-DDThh:mm:ss observation start, UT I'm converting it to a FITS file with NDF2FITS. After conversion this date is in the header: DATE-OBS= '2000-01-01T12:09:37.679' / Date of observation Also, an entry is added for the time when the conversion was made: DATE = '2012-06-17T16:46:20' / file creation date (YYYY-MM-DDThh:mm:ss UT) Any idea of what's going on? Eduardo ---- Starlink User Support list For list configuration, including subscribing to and unsubscribing from the list, see https://www.jiscmail.ac.uk/cgi-bin/webadmin?A0=STARLINK