RE: How long to sea mail a package to the UK from australia? I can&#39;t seem to find a specific time period for how long it takes to mail packages to the UK through sea mail... except dates for Christmas deliveries, which are almost 3 months prior.
One thing a suspense date IS NOT, it is not a date by which time something is required to be done in most cases. It's just a control for any needed follow up. In the real world, a suspense date is a date that something needs to be done by.
Now you can simply use the doomsday closest to the date in question to find out which weekday it falls on. In the example date of February 11, 1978, the closest doomsday is the last day of February, which was February 28 because 1978 was not a leap year. Use multiples of 7 to move closer to the date: 28 - 14 = 14.