Pinterest CSV publish date: UTC ISO format to schedule Sume clips

In a Pinterest bulk CSV, a future Publish date schedules the Pin, written in UTC like 2023-12-17T08:00:00, and an empty cell publishes immediately. Spread a batch across days in code, and render the clips first so the Media URLs are ready when you upload.

How does the cell behave?

Based on the bulk upload page.

How do I generate slots?

This script spaces 10 Pins across days at 08:00 UTC, two per day. Change the start date to a future one.

from datetime import datetime, timedelta

start = datetime(2030, 1, 1, 8, 0, 0)
per_day = 2
for i in range(10):
    slot = start + timedelta(days=i // per_day, hours=(i % per_day) * 4)
    print(i + 1, slot.strftime("%Y-%m-%dT%H:%M:%S"))

What does Sume do here?

Sume only supplies the files. Because the Sume docs describe durable media URLs, the scheduled Pins can point at a render made well before the publish date, and you need not re-render when the slot arrives.