Timezone currently does not take into account Daylight savings time

[evanmalmud]

Is your feature request related to a problem? Please describe.
When putting in a timezone in the configuration of "EST" once we swap times to EDT it would require a configuration change to keep producing notifications at the same time.

For instance a week ago this would produce notifications at 8am ET

config:
      timezone: "EST"
      schedule: "0 0 8 ? * MON-FRI"

But now notifications are produced at 9am ET

Describe the solution you'd like
Instead of using EST or EDT timezone instead use the Java Zone.id so a user can add
Americas/NewYork and the timezone will always match ET.
https://docs.oracle.com/javase/8/docs/api/java/time/ZoneId.html
A list of options is available on that page.

Describe alternatives you've considered
Some sort of boolean to support Daylight shift? Might be hard to know when DT is active.

Additional context
N/a

[bbaga]

Thank you for the report. This is a (sadly) known issue, that needs further investigation as EST/EDT/ET never worked properly, even though the Quartz's documentation makes claims that they should be observed. If I remember correctly, time zone names such as Americas/NewYork are supported already, but the issue with DST remains.

Since Quartz may be abandoned at this point the job scheduler may have to be replaced anyway.

[bbaga]

Hey @evanmalmud, have you had a chance to try the zone id format in the configuration file?

[evanmalmud]

I have not. Maybe can do this next week.

…

On Fri, Apr 7, 2023, 6:54 AM bbaga ***@***.***> wrote: Hey @evanmalmud <https://github.com/evanmalmud>, have you had a chance to try the zone id format in the configuration file? — Reply to this email directly, view it on GitHub <#276 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAWH5QDR2AWMQXSHY5F5YQLW77XAHANCNFSM6AAAAAAV36634E> . You are receiving this because you were mentioned.Message ID: ***@***.***>