cron

I saw in the documentation that "on the first day of the month" works as an interval and assumed that "on the fifth day of the month" would work as well. However, it is not a valid string neither for the later nor human-interval libraries. Sadly, the human-interval library returns 0, instead of NaN for this particular string, so no error is thrown and the job does not work (it never fires)

I need something like below:

newCronExpression = convert (localCronExpresn,fromLocalTZ, "UTC")

Is it possible using cron-utils?

Let me give an example:

My local timezone is IST i.e. GMT+5.30.

Current local time is: 11:20 AM.

I want a job to run in 45 min of every hour.

So, my cron expression: 45 * * * *

Hence I am expecting my job to run after 25 min ( as starting time