Forcing employees in sensitive roles to take vacations is a deliberate fraud control. It disrupts conspiracies and allows others to review their work, intentionally creating organizational chaos to shake out serious issues like a single insider hiding massive losses.
Government applications like the IRS's sometimes shut down at night because they interface with legacy mainframe systems. These systems run 'batch' processes overnight and cannot safely handle 'interactive' user queries simultaneously, creating forced downtime to protect critical data integrity.
Global systems cannot rely on official national holiday lists. They must account for informal, counterparty-specific holidays (like Japan's 'Company Foundation Day') that impact availability and create operational risk, as these are often buried in operations manuals rather than standard data feeds.
The adoption of 'Black Friday' in Japan, where it became a promotion for black-colored items, shows how global commerce can spread cultural events. The original context is lost, but the commercial opportunity creates a new, localized tradition driven by business directives.
Events like Black Friday occur when banking systems are closed for a long weekend. Payment companies promising next-day payouts must 'float' enormous transaction volumes for several days, creating a significant negative float that represents a major capital and operational risk.