Date & Time Functions: Real-World

An e-commerce platform ships orders worldwide. Users in different timezones see order status: "Order placed 2 hours ago". Subscription billing must charge exactly at "2024-12-25 00:00:00 user's local time" in 150 countries. Reports show sales by hour, but must account for 24 different timezones.

Daily order reporting across time zones

An operations dashboard needs orders from one local business day while the database stores timestamps in UTC.

Explicit boundaries prevent missed records and keep timestamp indexes usable.

Filter with an index-friendly time range

SELECT order_id, created_at FROM orders WHERE created_at >= TIMESTAMP '2026-08-01 00:00:00' AND created_at < TIMESTAMP '2026-08-02 00:00:00';

All