Missing info: at what time "today's" image is created?

[EmmanueleVilla]

As per title, when the change in what day is "today" happens? Looking at the code, it seems that datetime.today().date() returns the local datetime, so what local is that?

[brianthomas]

I believe this code is run local to Eastern US time, however its been years since I checked this.

=brian

From: Emmanuele Villa [email protected] Reply-To: nasa/apod-api [email protected] Date: Tuesday, July 30, 2019 at 4:54 AM To: nasa/apod-api [email protected] Cc: Subscribed [email protected] Subject: [EXTERNAL] [nasa/apod-api] Missing info: at what time "today's" image is created? (#26)

As per title, when the change in what day is "today" happens? Looking at the code, it seems that datetime.today().date() returns the local datetime, so what local is that?

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[MarcusOtter]

To double check this, I set up automated tests for my wrapper to run every 30 minutes over night, starting from minute 15. The tests started failing when my local time passed 00:00 and started working again at 04:00 UTC, so the APOD seems to be published at 00:00 UTC-4 (Eastern Time).

Last failing test (03:46:49 UTC) First passing test (04:16:38 UTC)

Perhaps the time zone information should be added to the README.

EDIT: Remember DST.

Time period start	Time period end	Time of publication
Second Sunday in March	First Sunday in November	00:00 UTC-04:00
First Sunday in November	Second Sunday in March	00:00 UTC-05:00