How do I stop a flow from running on certain specified days?

In Prefect 1, I could specify a [list] of datetime objects, where the objects refer to days that I do not want the flows to run This list is passed as an argument to

prefect.schedules.filters

.

In Prefect 2 (Orion), I am not sure where to specify exceptions. The available schedulers are rrule and cron. I have not tried rrule so far, but AFAIK there is no way to pass a custom list of datetime objects as cron exceptions. An example is that I have a script that runs every morning at 9am Mon-Sat, but I need that script to stop running on specified holidays.

After reading the tests, I thought I needed to add timezones to the excluded dates: i.e.

schedule:
  rrule: 'EXDATE:20230323' --> Needs to be expressed as: EXDATE: 20230323T000000Z
  timezone: Asia/Singapore

It turns out that

YYYYMMDD

works, however, the error in the rrule is that it needs to be specified as

EXDATE:

instead of

EXDATE=

I was able to apply the above schedule to my deployment, but does not fit my needs, as I need the flow to: • Run everyday at 430pm • Excluding specified dates Adding the first requirement to the rrule:

schedule:
  rrule: 'EXDATE:20230323;FREQ=WEEKLY;BYDAY=MO,TU,WE,TH,FR,SA;BYHOUR=16;BYMINUTE=30'
  timezone: Asia/Singapore

The error encountered is: Invalid string (replacing

':'

with

'='

or vice versa for the other properties

FREQ

,

BYDAY

,

BYHOUR

, `BYMINUTE`does not work as well). I also tried combining the rrule (using its

EXDATE

property) with a cron expression, but that didn't work either.

schedule:
  rrule: 'EXDATE:20230323'
  cron: 5 9 * * 1-6
  timezone: Asia/Singapore
  day_or: true