Execute a job at 8:30 everyday morning
30 8 * * * echo 1
Execute a job at 2:00 PM on every Saturday
00 14 * * 6 echo 2
Execute a job at 12:00 AM on every 1st July
00 00 01 06 * echo 3
Execute a job at 3:30 PM on every month at date of 25th
30 15 25 * * echo 4