Blue Monday (date) the melancholic mind-set of "Blue Monday"". The date is generally reported as falling on the third Monday in January, but also on the second or fourth Monday, or the Monday of the last full week of January. The first such date declared was 24 January in 2005 as part of a Sky Travel press release. The formula uses many factors, including: weather conditions, debt level (the difference between debt accumulated and our ability to pay), time since Christmas, time since failing our new year’s resolutions, low motivational levels and feeling of a need to take action. One equation used by
Determination of the day of the week method have failed to point out his error, most notably Martin Gardner. In 1752, the British Empire abandoned its use of the Old Style Julian calendar upon adopting the Gregorian calendar, which has become today's standard in most countries of the world. For more background, see Old Style and New Style dates. In the C language expressions below, y, m and d are, respectively, integer variables representing the year (e.g., 1988), month (1-12) and day of the month (1-31). In 1990, Michael Keith and Tom Craver published the foregoing expression that seeks to minimise the number of keystrokes needed to