Revert "Disable time zone aware attributes"

This reverts commit 09e0f1f9cc1a8737dda76c4c1809bc2e6a5483a1.
Revert "Change time.now to time.zone.now"

This reverts commit 322747a74e9dc3f10b884151e03d23c7e0005c39.
Reverting with Pacific Time configured