SELECT TOP (3000)
seq,
utcts,
created_at,
lat,
lon,
state,
/* + = created_at occurs AFTER utcts, − = BEFORE */
DATEDIFF(
MILLISECOND,
(utcts AT TIME ZONE 'UTC'),
((created_at AT TIME ZONE 'Mountain Standard Time') AT TIME ZONE 'UTC')
) AS diff_ms_utc_vs_local
FROM dbo.kettle
WHERE dtype = 'Collar'
AND created_at >= '2025-10-22T19:43:08'
ORDER BY created_at desc;