HST & Zulu times
----------------
HST     Zulu
2400	1000   
0100	1100                 
0200	1200                 
0300	1300                 
0400	1400                     
0500	1500                 
0600	1600                 
0700	1700                 
0800	1800                 
0900	1900                 
1000	2000                  
1100	2100                 
1200	2200                 
1300	2300                 
1400	2400   
_______________Above: = Zulu and HST same day	
_______________Below: Zulu one day ahead of HST	
1500	0100   
1600	0200
1700	0300
1800	0400
1900	0500
2000	0600
2100	0700
2200	0800
2300	0900   
	
   Examples: HST 1830 on Tuesday would be 
             Zulu 0430 on Wednesday.
             Zulu 0430 on Friday would be
             HST 1830 on Thursday.