CIGAL Reference Manual, Chapter 4 (Variables): hour
usage: dest = hour
HOUR is a number variable containing the hour and minute portions of the current time. This variable is read-only. The value is set at the moment it is read. HOUR is set as the hour (using a 24 hour clock) plus the current minute divided by 100.
At 12:10 am, HOUR = 0.10 At 9:01 am, HOUR = 9.01 At 11:41 pm, HOUR = 23.41 At 5:25 pm on October 13th, 1992, the CIGAL command: ftype '%5/2f/%2d %5:2f:%5.2f\n' day year-1900 hour secs would print as: 10/13/92 17:25:00.00