12:00 am ET might be unsuitable for PDT time zone
When planning a call between Eastern Time and Pacific Daylight Time, you need to consider time difference between these time zones. ET is 3 hours ahead of PDT.
It is 12:00 am in ET. This does not fall within the span of usual working time between 9:00 am and 3:00 pm in PDT, but it still might be suitable to arrange a meeting, since it would be 9:00 pm in PDT, which is between 7:00 am and 11:00 pm PDT time.