St. Nicholas Day Dec 6 and Santa Lucia Dec 13, 2026 are both Sundays

Both fall on a Sunday this year: December 6, 2026 (St. Nicholas Day) and December 13, 2026 (St. Lucia, or Santa Lucia, Day). Two 6-second 720p clips from Wan 3.0 cost $1.50 on Sume, because Wan lists $0.10 per second at 720p, Sume bills list x 1.25 ($0.125 per second), and 6 seconds is $0.75 a clip.

Sunday posts are posted on a day when many shops are closed, so schedule them on Friday. The clips are made from your own product photos; they should show goods you sell, such as boots, sweets, saffron buns or candles, and not a custom tradition you have not researched.

The two clips

Each clip has one product and one idea. The weekday arithmetic uses December 4, 2026 as a Friday.

Submit both

Wan 3.0 accepts 2 to 30 seconds at 480p, 720p and 1080p. Use an idempotency key for each so a retry does not bill twice.

import asyncio, os
import httpx

CLIPS = {
    "nicholas": "A pair of boots filled with wrapped sweets by a door, slow push-in, warm light",
    "lucia": "A tray of saffron buns with small white candles, gentle camera drift",
}

async def main():
    headers = {"Authorization": f"Bearer {os.environ['SUME_API_KEY']}"}
    async with httpx.AsyncClient(headers=headers, timeout=60) as c:
        for key, prompt in CLIPS.items():
            r = await c.post("https://api.sume.com/v1/videos",
                headers={"Idempotency-Key": f"sunday-dec-2026-{key}"},
                json={"model": "wan-3.0", "prompt": prompt, "duration": 6,
                      "resolution": "720p", "aspect_ratio": "9:16"})
            r.raise_for_status()
            print(key, r.json()["id"])

asyncio.run(main())

Check before you post

Watch each result for real-fire risk and for details that are wrong for the tradition, such as the number of candles. Candle imagery in a generated scene is an effect, so do not imply your product is safe to use that way.

If you want to add the sale line, burn it in with caption cues. Then schedule both for Friday evening.

• Re-rolling a 6 s clip costs $0.75.
• Add a music bed with Music 1.0, or leave the native audio.
• Keep the 9:16 master for later reuse.