1901 Explained

Year 1901 (MCMI) was a common year starting on Tuesday (link will display calendar) of the Gregorian calendar (or a common year starting on Monday[1] of the 13-day-slower Julian calendar).It was the first year of the 20th century.

Events

January

February

March

April

May

June

July

August

September

October

November

December

Undated

Ongoing

Births

January-February

March-April

May-June

July-August

September-October

November-December

Deaths

January–June

July–December

Nobel prizes

Significance of 1901 for modern computers

The date of Fri Dec 13 20:45:52 1901 is significant for modern computers becauseit is the earliest date representable with a signed 32-bit integer on systemsthat reference time in seconds since the Unix epoch. This corresponds to -2147483648seconds from Thu Jan 1 00:00:00 1970.

For the same reason, many computer storage systems are also unable to represent an earlier date.

For related reasons, many computer systems suffer from the Year 2038 problem. This iswhen the positive number of seconds since 1970 exceeds 2147483647 (01111111 11111111 11111111 11111111 in binary)and wraps to -2147483648. Hence the computer system erroneously displays or operateson the time Fri Dec 13 20:45:52 1901. In this way the year 1900 is to the Year 2000 problem as is the year 1901 to the Year 2038 problem.

Notes and References

  1. "Calendar in year 1901 (Russia)" (Julian on Monday), webpage: Julian-1901 (Russia used the Julian calendar until 1919).