format_linevec - Returns a formated
get_tkblattnr - Calculates the sheetnumber of TK25 maps from latitude and longitude.
jd2kal - Transform a Julian Date (JD) in the calendar date and time.
kal2jd - Transforms a calender date and time to the Julian Date (JD).
leapseconds - Returns a matrix with all leapseconds, or counts the leapseconds to the given date.
modJD - Transforms a calendar date and time in die Epoche J2000.0 and in the Modified JD (MJD).
plotWorldmap - Returns and/or plots a worldmap in geographic coordinates.