Is 157 sidereal days as long as The First light bulb test (Edison, 1879)?
It's about 250 times as long as The First light bulb test (Edison, 1879)
The length of The First light bulb test (Edison, 1879) is about 0.6060 sidereal days.
(Thomas Edison's filament Thread No. 9) (1879) (total time)
Lit at 1:30am on October 22nd, 1879, the first Edison completed his first majorly successful test of his light bulb, which continued to burn for 0.6060 sidereal days until the bulb glass succumbed to the heat and cracked, extinguishing the filament. Within 1,100 sidereal days of his success, Edison was selling 45,000 light bulbs per day to large companies across the country.
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